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108
Logtalk/INSTALL
View File

@ -1,65 +1,90 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
This file contains detailed instruction for installing and configuring
Logtalk.
1. LOGTALK INSTALLATION
Installing Logtalk is just a matter of decompressing the downloaded archive
and copying the resulting directory to a suitable location.
The Logtalk directory can reside in any user accessible location.
This location depends on the working environment and on the number of users.
The "misc" sub-directory contains some shell scripts for easy installation
of Logtalk on Windows, Unix, and Unix-like operating systems (for details,
see the misc/NOTES file).
The Logtalk directory can reside in any user accessible location. This
location depends on the working environment and on the number of users.
INSTALLING FOR A SINGLE USER
* Installing for a single user:
In the case of a single user, the Logtalk directory may simply be copied to
the user home directory.
the user home directory. In alternative, assuming a user with administrative
rights, the same setup described below for multiple users may be applied.
This has the advantage of allowing the user to freely try and modify the
provided examples, library, and configuration files with the option of, at
any time, restoring the files to its original state by simply running one of
the provided scripts.
INSTALLING FOR MULTIPLE USERS
* Installing for multiple users:
In the case of multiple users, the Logtalk directory can be copied to any
location that its accessible by all the users (assuming that copying the
Logtalk directory to each user home directory is not feasible or desired).
Logtalk directory to each user home directory is, for some reason, not
feasible or desired).
Regarding directory and file permissions, it is advisable to make all files
read-only in order to avoid user tempering. However, the library and examples
sub-directories (and possibly the compiler sub-directory, depending on the
chosen Prolog compiler) must be user writable as compiling Logtalk source
files generates intermediate Prolog files, which are written to the same
location as the source files. However, making directories world-writable is a
security risk. One solution is to copy the Logtalk xml, examples, and library
directories to each user home directory (the "misc" sub-directory contains
some scripts which may be called by the end-users for making these copies).
The "misc" sub-directory contains shell scripts for easy installation of
Logtalk on Windows, Unix, and Unix-like operating systems (for details,
see the misc/NOTES file). These scripts make all files read-only in order
to avoid user tempering. However, Logtalk directories such as "library"
or "examples" must be user-writable as compiling Logtalk source files
generates intermediate Prolog files, which are written to the same location
as the source files. In addition, it is convenient that directories such as
"configs", "libpaths", and "xml" be user-writable in order to allow each
user to customize Logtalk to its needs. Given that making directories
world-writable is a security risk, one solution is to copy the directories
that need to be user-writable to each user home directory. The "misc" sub-
directory contains shell scripts (named "cplgtdirs.*") which may be called
by the end-users for making such copies. This is the preferred setup for a
computer lab. When used with one of the Prolog compilers for which an
integration script is provided on the "misc" directory, this setup allows
end-users to independently customize default compilation options and
library paths.
ENVIRONMENT VARIABLES
2. LOGTALK CONFIGURATION
It is recommended that you define an environment variable named LOGTALKHOME
pointing to the Logtalk installation directory for use with your Prolog
compilers. In addition, you may want to add the Logtalk sub-directory "xml",
which contains useful scripts for processing XML documenting files, to your
execution path.
2.1 Setting environment variables
You need to set two environment variables, LOGTALKHOME and LOGTALKUSER. The
environment variable LOGTALKHOME should point to the Logtalk installation
directory. The environment variable LOGTALKUSER should point to a directory
in your home directory where you want to store the user-specific Logtalk files
(for example, ~/logtalk). Both environment variables may be set for all users
by a user with administration privileges. The two environment variables can
have the same value if you are the only Logtalk user on your computer and if
you have full permissions to the Logtalk installation directory. In addition,
you may want to add the Logtalk sub-directory "xml", which contains useful
scripts for processing XML documenting files, to your execution path.
* Unix and Unix-like systems:
If you use a csh shell, add the following line to your ~/.cshrc file:
setenv LOGTALKHOME /your/installation/directory/lgt2216
setenv LOGTALKHOME /your/logtalk/installation/directory
setenv LOGTALKUSER $HOME/logtalk
setenv PATH $PATH:$LOGTALKHOME/xml:$LOGTALKHOME/misc
If you use a bash shell, add the following lines to your ~/.profile file:
LOGTALKHOME=/your/installation/directory/lgt2216
export LOGTALKHOME
LOGTALKHOME=/your/logtalk/installation/directory
LOGTALKUSER=$HOME/logtalk
PATH=$PATH:$LOGTALKHOME/xml:$LOGTALKHOME/misc
export PATH
export PATH LOGTALKHOME LOGTALKUSER
When using the provided shell script for installing Logtalk, a symbolic link
to the Logtalk installation directory is automatically created. The link is
@ -68,20 +93,33 @@ environment variable in order to avoid breaking it when upgrading Logtalk.
* Windows systems:
In Windows 95/98/ME, environment variables are defined in the autoexec.bat
In Windows 95/98/ME, environment variables are defined in the "autoexec.bat"
file (you will need to reboot after editing the file):
SET LOGTALKHOME=C:\your\installation\folder\
SET LOGTALKUSER=%HOMEPATH%\logtalk
In Windows NT/2000/XP, environment variables are defined using the System
properties control panel (if you are a system administrator, you should use
the JScript install script provided in the "misc" sub-directory).
the JScript install script provided in the "misc" sub-directory; this script
sets both the LOGTALKHOME and the LOGTALKUSER environment variables).
CUSTOMIZING PROLOG CONFIGURATION FILES
2.2 Setting library paths
In Logtalk, a library is simply a directory containing source files. Library
paths can be declared using a dynamic predicate. This allows compiling and
loading of libraries and library files to be performed without worries about
library paths. In the "libpaths" directory you will find a sample file which
you can copy and edit to match your Logtalk installation and your Prolog
compiler and operating-system requirements. See the "libpaths/NOTES" file for
more details.
2.3 Customizing prolog configuration files
Logtalk interfaces with a specific Prolog compiler via a configuration file
that can be found on the $LOGTALKHOME/configs directory. These configuration
that can be found on the "$LOGTALKUSER/configs" directory. These configuration
files can be customized by changing the values of the default flags and
compiler options which are used by Logtalk when compiling source files. For
a full description of these default flags and compiler options, consult the
@ -89,7 +127,7 @@ a full description of these default flags and compiler options, consult the
the default flags that you may want to change are: "portability", "altdirs",
"underscore_vars", "startup_message", "smart_compilation", and the set of
documentation-related flags ("xml", "xsl", "xmlspec", and "doctype"). Be sure
to read the $LOGTALKHOME/configs/NOTES file for Prolog specific notes; some
to read the "$LOGTALKUSER/configs/NOTES" file for Prolog specific notes; some
Prolog compilers do not support the whole range of compilation flags.
@ -100,5 +138,5 @@ is automatically consulted at startup. This initialization file may contain
directives for loading other files, such as the Logtalk configuration file
and the Logtalk compiler. The "misc" sub-directory contains several scripts
for automating the creation of these initialization files for some Prolog
compilers. In addition, be sure to read the configs/NOTES file notes on the
compilers. In addition, be sure to read the "configs/NOTES" file notes on the
Prolog compilers that you intend to use.

71
Logtalk/QUICK_START
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@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -10,40 +10,46 @@ Quick start
===========
1. Open the manuals/index.html file with a web browser.
1. Install Logtalk by following the instructions on the "INSTALL" file.
2. Select the Tutorial link. This will provide you with a basic understanding
2. Open the "manuals/index.html" file with a web browser.
3. Select the "Tutorial" link. This will provide you with a basic understanding
of the main Logtalk concepts.
3. Go back to the index.html file and select the User Manual link and then
4. Go back to the "index.html" file and select the "User Manual" link and then
the Installing and running Logtalk links. This will provide you with a basic
understanding of how to start Logtalk and compile and load Logtalk code.
Assuming that Logtalk supports your Prolog compiler:
1. Read the NOTES file in the configs sub-directory to check if any patch
1. Read the "NOTES" file in the "configs" sub-directory to check if any patch
or workaround is needed for your compiler.
2. Start your Prolog compiler.
3. Change the current working directory of your Prolog session to the Logtalk
installation directory. If you don't know which predicate to use, check the
configs/NOTES file or your Prolog reference manual.
"configs/NOTES" file or your Prolog compiler reference manual.
4. Compile and load the config file for your Prolog compiler.
5. Compile and load the Logtalk pre-processor/runtime found in the compiler
5. Compile and load the Logtalk compiler/runtime found on the "compiler"
sub-directory.
Note that both the configuration files and the compiler/preprocessor files
are Prolog files. The predicate called to load these files depends on your
Prolog compiler (consult your Prolog compiler documentation or take a look
at the definition of the predicate '$lgt_load_prolog_code'/1 in the config
file. For most command-line compilers, you could type at the Prolog prompt
something like:
6. Adapt, if needed, the file "libpaths/libpaths.pl" to match your Logtalk
installation, Prolog compiler, and operating-system, and then compile and
load it.
| ?- ['configs/foo.config', 'compiler/logtalk.pl'].
Note that both the configuration files, the compiler/runtime files, and the
library paths file are Prolog files. The predicate used to load these files
depends on your Prolog compiler (consult your Prolog compiler documentation
or take a look at the definition of the predicate '$lgt_load_prolog_code'/1
in the config file. For most command-line compilers, you could type at the
Prolog prompt something like:
| ?- ['configs/foo.config', 'compiler/logtalk.pl', 'libpaths/libpaths.pl'].
Replace the file name foo.config with the appropriated config file name for
your compiler.
@ -51,45 +57,24 @@ your compiler.
Now you may try some of the included examples:
1. Change the working directory of your Prolog compiler to the library
directory and then type at the Prolog prompt the following query:
| ?- logtalk_load(all_loader).
This will load all the library entities that you will need in order to run
the Logtalk examples.
2. Open the examples sub-directory. There you find several sub-directories
1. Open the examples sub-directory. There you find several sub-directories
with ready to run examples and a NOTES file containing general instructions
and a brief description of each example. Select and open one of the examples
sub-directory.
3. Read the example NOTES file. Some examples are dependent on other examples
or on library objects (already loaded on step one). You may need to load
additional files before running the chosen example.
2. Read the example NOTES file for a description of the example.
4. Change the working directory of your Prolog compiler to the example
directory.
5. Compile and load the loader file for the example as described in the NOTES
and SCRIPT files. For most examples, the loader file is named loader.lgt.
Therefore, you will need to type the query:
| ?- logtalk_load(loader).
This will compile and load all the example files.
6. Open the example SCRIPT file, which contains sample queries that you
may try by copying-and-pasting or dragging-and-droping them on your Prolog
interpreter top-level.
3. Open SCRIPT file for instructions on how to load the example and for sample
queries that you may try by copying-and-pasting or dragging-and-droping them
on your Prolog interpreter top-level.
Ready to start writing your own programs?
1. Read the User Manual sections on Programming in Logtalk and Running and
debugging Logtalk programs.
1. Read the User Manual sections on "Programming in Logtalk" and "Running and
debugging Logtalk programs".
2. Take a look at the wenv sub-directory. There you will find syntax
2. Take a look at the "wenv" sub-directory. There you will find syntax
configuration files for popular text editors that enable syntax coloring
when editing Logtalk source files.

12
Logtalk/README
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -84,7 +84,7 @@ for further instructions.
See the user manual for a description of the source files organization
and for using instructions (to read the user manual open the file
manuals/index.html with a web browser). Most files are formatted using
"manuals/index.html" with a web browser). Most files are formatted using
four-space tabs.
@ -104,9 +104,9 @@ from the Logtalk web site. The PDF files include page numbers, index and a
table of contents and are available for printing in both A4 and US Letter
paper formats.
The file RELEASE_NOTES contains descriptions of the changes made in
Logtalk since the first public version. Read it carefully if you have
been using a previous Logtalk version.
The file RELEASE_NOTES contains descriptions of the changes made in Logtalk
since the first public version. Read it carefully if you have been using a
previous Logtalk version.
8. UPGRADING
@ -118,7 +118,7 @@ instructions on how to upgrade your programs to run under this new version.
9. CITATIONS
If you want to cite Logtalk in your publications, please consult the file
BIBLIOGRAPHY for BibTeX bibliographic references.
BIBLIOGRAPHY for bibliographic references in BibTeX format.
10. CONTRIBUTIONS

30
Logtalk/RELEASE_NOTES
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@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -10,6 +10,34 @@ RELEASE NOTES
=============
2.22.0 - November 29, 2004
Implemented a notion of library as simply a directory containing source
files. Added a new dynamic predicate, logtalk_library_path/2, for
specifying library paths. Added a sample file (libpaths/libpaths.pl) for
setting library paths for the Logtalk standard library and for all the
supplied examples.
Added support for using the notation <library>(<entity>) with the built-in
predicates logtalk_compile/1-2 and logtalk_load/1-2 for compiling and
loading source files contained on a library, without the need to first
change the current working directory.
Changed the library and the examples loading instructions to use the new
notation <library>(<entity>).
Improved installation instructions and installation scripts. Added a new
environment variable, LOGTALKUSER, for defining the location of the copies
of the user-modifiable Logtalk files in a multiple users setup environment.
Added utility predicates to most configuration files for querying and
changing the current working directory (needed for the <library>(<entity>)
notation to work).
Corrected a bug in the code that checks for file existence when compiling
or loading source files and source metafiles.
2.21.6 - November 15, 2004
Added support for using alternative directories for storing the Prolog files

8
Logtalk/UPGRADING
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -89,3 +89,9 @@ order to ensure compatibility with the new uses/2 predicate directive).
Logtalk version 2.21.2 adds a new clause to the code generated when compiling
entity in order to support the new alias/1 predicate property, implying
recompilation of all objects, protocols, and categories.
Logtalk version 2.22.0 adds support for using the notation <library>(<file>)
when compiling and loading source files. Logtalk applications using this new
notation will need to be modified in order to run in previous Logtalk versions.
In addition, the exceptions generated by the predicates logtalk_compile/1-2
and logtalk_load/1-2 have been updated to take into account this new feature.

11
Logtalk/examples/NOTES
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@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -11,12 +11,13 @@ description of each example is included below.
Each example folder contains a NOTES file and a loader helper file which
may be used to load all the example entities. In addition, most examples
contain a SCRIPT file with sample queries for your to try.
contain a SCRIPT file with instructions on how to load the example and
sample queries for your to try.
Most of these examples need objects, protocols, and categories which are
defined in the Logtalk standard library or in other examples, so you
should load them first (see the NOTES files inside the library folder and
the NOTES file inside each example folder).
defined in the Logtalk standard library or in other examples. See the NOTES
files inside the library folder and the NOTES and SCRIPT files inside each
example folder).
Some examples may redefine objects already loaded from other examples.
You may want to restart Logtalk after trying each example.

11
Logtalk/examples/aliases/NOTES
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@ -1,18 +1,13 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
or, in alternative, compile and load the example metafile:
| ?- logtalk_load(aliases).
To load this example and for sample queries, please see the SCRIPT
file.
For a description of this example, please see the comments in the
aliases.mlgt metafile.

4
Logtalk/examples/aliases/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(aliases(loader)).
...

6
Logtalk/examples/benchmarks/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
If your Prolog compiler does not support a module system, then edit the
loader.lgt file and comment out the directive that loads the module code.

4
Logtalk/examples/benchmarks/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(benchmarks(loader)).
...

13
Logtalk/examples/birds/NOTES
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@ -1,19 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will also need to also load the library/hierarchies_loader file.
Alternatively, you may load the library loader file to load all
library entities.
To load this example and for sample queries, please see the SCRIPT file.
This folder contains an example of a bird identification expert system
adopted with permission from the book "Adventure in Prolog" by Amzi! inc.
@ -63,5 +56,3 @@ order
swan
trumpeter_swan
whistling_swan

13
Logtalk/examples/birds/SCRIPT
View File

@ -1,14 +1,21 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library support files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load(library(hierarchies_loader)).
...
% now you are ready for loading the example:
| ?- logtalk_load(birds(loader)).
...

8
Logtalk/examples/bricks/NOTES
View File

@ -1,16 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will need to load the objects in the roots and relations examples.
To load this example and for sample queries, please see the SCRIPT file.
You will also need to load the following files in the library directory:
events_loader, types_loader, metapredicates_loader, and hierarchies_loader.

19
Logtalk/examples/bricks/SCRIPT
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@ -1,14 +1,27 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library and support example files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load(library(all_loader)).
...
| ?- logtalk_load(roots(loader)).
...
| ?- logtalk_load(relations(loader)).
...
% now you are ready for loading the example:
| ?- logtalk_load(bricks(loader)).
...

6
Logtalk/examples/classvars/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
This folder contains an example that shows how to implement class variables
as defined in Smalltalk. The name shared instance variables is however much

4
Logtalk/examples/classvars/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(classvars(loader)).
...

6
Logtalk/examples/dcgs/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
This folder contains the following examples of using DCGs inside
objects and categories:

4
Logtalk/examples/dcgs/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(dcgs(loader)).
...

14
Logtalk/examples/diamonds/NOTES
View File

@ -1,11 +1,14 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load this example and for sample queries, please see the SCRIPT
file.
This example illustrates some variants of the "diamond problem"
(multi-inheritance conflicts and ambiguities) and its respective
solutions on Logtalk.
@ -45,12 +48,3 @@ using prototype hierarchies:
diamond3
presents a solution which allows both inherited definitions to be
used in D
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load only a specific variant, compile and load the respective metafile.
For example:
| ?- logtalk_load(diamond2).

4
Logtalk/examples/diamonds/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(diamonds(loader)).
...

6
Logtalk/examples/dynpred/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
This folder contains examples of using some of the built-in database
handling methods. Two hierarchies are provided, one prototype-based,

4
Logtalk/examples/dynpred/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(dynpred(loader)).
...

11
Logtalk/examples/engines/NOTES
View File

@ -1,18 +1,13 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
or, in alternative, compile and load the example metafile:
| ?- logtalk_load(engines).
To load this example and for sample queries, please see the SCRIPT
file.
For a description of this example, please see the comments in the
engines.mlgt metafile.

4
Logtalk/examples/engines/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(engines(loader)).
...

9
Logtalk/examples/errors/NOTES
View File

@ -1,17 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
The entities on this example are divided in two sets. To load the two
sets of entities, compile and load the corresponding loader files:
| ?- logtalk_load(warnings_loader).
| ?- logtalk_load(errors_loader).
To load this example, please see the SCRIPT file.
This folder contains examples of objects, categories, and protocols
containing errors that will trigger Logtalk compiler warnings and

5
Logtalk/examples/hello_world/NOTES
View File

@ -1,10 +1,13 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load this example and for sample queries, please see the SCRIPT
file.
No self-respected programming language could do without a "Hello
World" example!

4
Logtalk/examples/hello_world/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,5 +8,5 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% just load the example and check the output message:
| ?- logtalk_load(loader).
| ?- logtalk_load(hello_world(loader)).
...

6
Logtalk/examples/inheritance/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
This folder contains examples of public, protected, and private inheritance,
for both prototype-based and class-based hierarchies.

4
Logtalk/examples/inheritance/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(inheritance(loader)).
...

6
Logtalk/examples/instmethods/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
This folder contains an example of instance defined methods. When using
classes and instances, methods must be declared in a class but the method

4
Logtalk/examples/instmethods/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(instmethods(loader)).
...

3
Logtalk/examples/lo/NOTES
View File

@ -1,10 +1,11 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
The examples in this folder are adopted from the Logic&Objects system
by Francis G. McCabe. Detailed descriptions and the original source code
can be found on the book "Logic and Objects" by the author published by

8
Logtalk/examples/lo/planner/NOTES
View File

@ -1,12 +1,10 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT
file.

4
Logtalk/examples/lo/planner/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(lo_planner(loader)).
...

7
Logtalk/examples/lo/travellers/NOTES
View File

@ -1,11 +1,10 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT
file.

4
Logtalk/examples/lo/travellers/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(lo_travellers(loader)).
...

7
Logtalk/examples/logic/NOTES
View File

@ -1,14 +1,13 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT
file.
This folder contains an object which implements a translator from
logic propositions to a set of clauses in conjunctive normal form.

4
Logtalk/examples/logic/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(logic(loader)).
...

11
Logtalk/examples/lpa/NOTES
View File

@ -1,18 +1,13 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will also need to load the library file hierarchies_loader.
Alternatively, you may load the library all_loader file to load all
library entities.
To load this example and for sample queries, please see the SCRIPT
file.
This example is an adaptation of a LPA Prolog++ example that is
described in the LPA Prolog++ Reference Manual. This manual can

13
Logtalk/examples/lpa/SCRIPT
View File

@ -1,14 +1,21 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library support files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load(library(hierarchies_loader)).
...
% now you are ready for loading the example:
| ?- logtalk_load(lpa(loader)).
...

13
Logtalk/examples/metainterpreters/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
This example contains simple meta-interpreters for pure Prolog encapsulated
in Logtalk objects:
@ -17,8 +15,9 @@ in Logtalk objects:
simple meta-interpreter for pure Prolog
proof_tree
simple meta-interpreter for pure Prolog returning the proof tree
for successful queries
simple meta-interpreter for pure Prolog returning the proof
tree for successful queries
tracer
simple meta-interpreter for pure Prolog that traces proof construction
simple meta-interpreter for pure Prolog that traces proof
construction

4
Logtalk/examples/metainterpreters/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(metainterpreters(loader)).
...

9
Logtalk/examples/metapredicates/NOTES
View File

@ -1,17 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will also need to load the library types_loader file. Alternatively,
you may load the library all_loader file to load all library entities.
To load this example and for sample queries, please see the SCRIPT file.
This example shows the use of metapredicates in Logtalk. Metapredicates are
predicates whose head contains arguments that will be called as goals in the

13
Logtalk/examples/metapredicates/SCRIPT
View File

@ -1,14 +1,21 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library support files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load(library(types_loader)).
...
% now you are ready for loading the example:
| ?- logtalk_load(metapredicates(loader)).
...

6
Logtalk/examples/mi/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
There are two examples in this folder. The first one is an adoption of a
multi-inheritance C++ example found on the D. M. Capper book "Introducing

4
Logtalk/examples/mi/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(mi(loader)).
...

9
Logtalk/examples/miscellaneous/NOTES
View File

@ -1,17 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will also need to load the library types_loader file. Alternatively, you
may load the library all_loader file to load all library entities.
To load this example and for sample queries, please see the SCRIPT file.
hanoi.lgt
Towers of Hanoi example

13
Logtalk/examples/miscellaneous/SCRIPT
View File

@ -1,14 +1,21 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library support files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load(library(types_loader)).
...
% now you are ready for loading the example:
| ?- logtalk_load(miscellaneous(loader)).
...

6
Logtalk/examples/msglog/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
If you need more than one message recorder, just create a new prototype
as an extension of the object msglog.

4
Logtalk/examples/msglog/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(msglog(loader)).
...

6
Logtalk/examples/operators/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
This folder contains examples of the used of operators inside objects
and categories:

4
Logtalk/examples/operators/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(operators(loader)).
...

6
Logtalk/examples/parametric/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
This folder contains two examples of parametric objects dealing with
time and date values.

4
Logtalk/examples/parametric/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(parametric(loader)).
...

17
Logtalk/examples/points/NOTES
View File

@ -1,26 +1,17 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will need to load the objects in the roots and relations examples.
You will also need to load the following files in the library directory:
events_loader, types_loader, metapredicates_loader, and hierarchies_loader.
Alternatively, you may load the library all_loader file to load all library
entities.
To load this example and for sample queries, please see the SCRIPT file.
You can find the original description of this example (and a solution using
SICStus Objects) at the URL:
http://www.sics.se/ps/sicstus/sicstus_32.html#SEC254
http://www.sics.se/ps/sicstus/sicstus_32.html#SEC254
Suppose you wish to represent points in a two-dimensional space. The
protocol you will have to define consists on the operation move/2, which

19
Logtalk/examples/points/SCRIPT
View File

@ -1,14 +1,27 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library and support example files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load([library(events_loader), library(types_loader), library(metapredicates_loader), library(hierarchies_loader)]).
...
| ?- logtalk_load(roots(loader)).
...
| ?- logtalk_load(relations(loader)).
...
% now you are ready for loading the example:
| ?- logtalk_load(points(loader)).
...

13
Logtalk/examples/polygons/NOTES
View File

@ -1,21 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will need to load the objects in the roots and relations examples.
You will also need to consult the following files in the library directory:
events_loader, types_loader, metapredicates_loader, and hierarchies_loader.
Alternatively, you may load the library all_loader file to load all library
entities.
To load this example and for sample queries, please see the SCRIPT file.
In this example we have several types of polygons that can be concentric.
This is represented by a concentric binary relation ensuring that whenever

19
Logtalk/examples/polygons/SCRIPT
View File

@ -1,14 +1,27 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library and support example files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load([library(events_loader), library(types_loader), library(metapredicates_loader), library(hierarchies_loader)]).
...
| ?- logtalk_load(roots(loader)).
...
| ?- logtalk_load(relations(loader)).
...
% now you are ready for loading the example:
| ?- logtalk_load(polygons(loader)).
...

6
Logtalk/examples/profiling/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
You will also need to load the following files in the library directory:
types_loader, events_loader, metapredicates_loader, and dates_loader.

13
Logtalk/examples/profiling/SCRIPT
View File

@ -1,14 +1,21 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library support files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load(library(all_loader)).
...
% now you are ready for loading the example:
| ?- logtalk_load(profiling(loader)).
...

7
Logtalk/examples/puzzles/NOTES
View File

@ -1,14 +1,13 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT
file.
This folder contains examples of Logtalk implementations for popular
logical puzzles. The description of each puzzle can be found on the

4
Logtalk/examples/puzzles/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(puzzles(loader)).
...

6
Logtalk/examples/reflection/NOTES
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,9 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
Run this example with no other examples loaded at the same time.
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
This folder contains an example that shows how to implement a reflective
class-based system. There are three main classes:

4
Logtalk/examples/reflection/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(reflection(loader)).
...

8
Logtalk/examples/relations/NOTES
View File

@ -1,16 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will also need to also load the objects in the roots example.
To load this example and for sample queries, please see the SCRIPT file.
This folder contains rewritten versions of some of the objects provided
with previous, 1.x versions, of the Logtalk system. They are intended to

16
Logtalk/examples/relations/SCRIPT
View File

@ -1,14 +1,24 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library and support example files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load([library(events_loader), library(types_loader), library(hierarchies_loader)]).
...
| ?- logtalk_load(roots(loader)).
...
% now you are ready for loading the example:
| ?- logtalk_load(relations(loader)).
...

12
Logtalk/examples/roots/NOTES
View File

@ -1,24 +1,18 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will need to consult the following files in the library directory:
events_loader, types_loader, and hierarchies_loader. Alternatively, you
may simply load the library all_loader file to load all library entities.
To load this example and for sample queries, please see the SCRIPT file.
This folder contains rewritten versions of some of the objects provided
with previous, 1.x versions, of the Logtalk system. They are intended to
help the conversion of applications from Logtalk 1.x to 2.x and to
support most of the other examples provided with the current Logtalk
package.
distribution.
Short description of each example entity:

13
Logtalk/examples/roots/SCRIPT
View File

@ -1,14 +1,21 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library support files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load([library(events_loader), library(types_loader), library(hierarchies_loader)]).
...
% now you are ready for loading the example:
| ?- logtalk_load(roots(loader)).
...

8
Logtalk/examples/searching/NOTES
View File

@ -1,16 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will need to also load the objects in the roots example.
To load this example and for sample queries, please see the SCRIPT file.
You will also need to load the following files in the library directory:
dates_loader, types_loader, events_loader, metapredicates_loader, and

16
Logtalk/examples/searching/SCRIPT
View File

@ -1,14 +1,24 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library and support example files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load(library(all_loader)).
...
| ?- logtalk_load(roots(loader)).
...
% now you are ready for loading the example:
| ?- logtalk_load(searching(loader)).
...

2
Logtalk/examples/shapes/NOTES
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

8
Logtalk/examples/shapes/ch/NOTES
View File

@ -1,16 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will need to also load the objects in the roots example.
To load this example and for sample queries, please see the SCRIPT file.
You will need to load the following files in the library directory:
events_loader, types_loader, and hierarchies_loader. Alternatively,

16
Logtalk/examples/shapes/ch/SCRIPT
View File

@ -1,14 +1,24 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library and support example files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load(library(all_loader)).
...
| ?- logtalk_load(roots(loader)).
...
% now you are ready for loading the example:
| ?- logtalk_load(shapes_ch(loader)).
...

7
Logtalk/examples/shapes/ph/NOTES
View File

@ -1,11 +1,10 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT
file.

4
Logtalk/examples/shapes/ph/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(shapes_ph(loader)).
...

11
Logtalk/examples/sicstus/NOTES
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,11 +8,4 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
The examples in this folder are adopted from the SICStus Prolog manual.
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will also need to load the following files in library directory:
hierarchies_loader and types_loader. Alternatively, you may load the
library all_loader file to load all library entities.
To load this example and for sample queries, please see the SCRIPT file.

13
Logtalk/examples/sicstus/SCRIPT
View File

@ -1,14 +1,21 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
% start by loading the necessary library support files (if not
% already loaded):
| ?- logtalk_load(loader).
| ?- logtalk_load([library(hierarchies_loader), library(types_loader)]).
...
% now you are ready for loading the example:
| ?- logtalk_load(sicstus(loader)).
...

10
Logtalk/examples/symdiff/NOTES
View File

@ -1,18 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
You will also need to load the library hierarchies_loader file.
Alternatively, you may load the library all_loader file to load
all library entities.
To load this example and for sample queries, please see the SCRIPT file.
This folder contains an example of using parametric objects to implement
symbolic expression differentiation and simplification.

4
Logtalk/examples/symdiff/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(symdiff(loader)).
...

6
Logtalk/examples/viewpoints/NOTES
View File

@ -1,14 +1,12 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
To load all entities in this example compile and load the loader file:
| ?- logtalk_load(loader).
To load this example and for sample queries, please see the SCRIPT file.
Example adopted from the paper "Classifying Prototype-Based Programming
Languages" by Christophe Dony, Jacques Malenfant and Daniel Bardou.

4
Logtalk/examples/viewpoints/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -8,7 +8,7 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(loader).
| ?- logtalk_load(viewpoints(loader)).
...

26
Logtalk/libpaths/NOTES Normal file
View File

@ -0,0 +1,26 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
This folder contains a Prolog file, "libpaths.pl", which defines the
library paths for the Logtalk standard library and for all the supplied
examples.
In order to easily compile and load library and example source files
using the notation <library>(<entity>), you will need to load the
"libpaths.pl" into your Prolog compiler after loading the Logtalk
compiler/runtime. You might need to edit the "libpaths.pl" file in
order to adapt it to reflect your Logtalk installation and your Prolog
compiler and operating-system requirements. As defined, the provided
"libpaths.pl" file is already compatible with some of the most popular
Prolog compilers, running on both on Windows, Unix, and Unix-like
operating-systems. The Prolog integration scripts found on the "misc"
directory generate scripts and shortcuts that automatically load the
copy of the "libpaths.pl" file from the Logtalk end-user directory
created by the "misc/cplgtdirs.*" scripts. See the "INSTALL" and the
"misc/NOTES" files for more details. Note that a few Prolog compilers
do not support the <library>(<entity>) notation. See the "configs/NOTES"
file for details.

50
Logtalk/libpaths/libpaths.pl Normal file
View File

@ -0,0 +1,50 @@
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Logtalk - Object oriented extension to Prolog
% Release 2.22.0
%
% Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
:- initialization(
(assertz(logtalk_library_path(library, '$LOGTALKUSER/library/')),
assertz(logtalk_library_path(aliases, '$LOGTALKUSER/examples/aliases/')),
assertz(logtalk_library_path(benchmarks, '$LOGTALKUSER/examples/benchmarks/')),
assertz(logtalk_library_path(birds, '$LOGTALKUSER/examples/birds/')),
assertz(logtalk_library_path(bricks, '$LOGTALKUSER/examples/bricks/')),
assertz(logtalk_library_path(classvars, '$LOGTALKUSER/examples/classvars/')),
assertz(logtalk_library_path(dcgs, '$LOGTALKUSER/examples/dcgs/')),
assertz(logtalk_library_path(diamonds, '$LOGTALKUSER/examples/diamonds/')),
assertz(logtalk_library_path(dynpred, '$LOGTALKUSER/examples/dynpred/')),
assertz(logtalk_library_path(engines, '$LOGTALKUSER/examples/engines/')),
assertz(logtalk_library_path(errors, '$LOGTALKUSER/examples/errors/')),
assertz(logtalk_library_path(hello_world, '$LOGTALKUSER/examples/hello_world/')),
assertz(logtalk_library_path(inheritance, '$LOGTALKUSER/examples/inheritance/')),
assertz(logtalk_library_path(instmethods, '$LOGTALKUSER/examples/instmethods/')),
assertz(logtalk_library_path(lo_planner, '$LOGTALKUSER/examples/lo/planner/')),
assertz(logtalk_library_path(lo_travellers, '$LOGTALKUSER/examples/lo/travellers/')),
assertz(logtalk_library_path(logic, '$LOGTALKUSER/examples/logic/')),
assertz(logtalk_library_path(lpa, '$LOGTALKUSER/examples/lpa/')),
assertz(logtalk_library_path(metainterpreters, '$LOGTALKUSER/examples/metainterpreters/')),
assertz(logtalk_library_path(metapredicates, '$LOGTALKUSER/examples/metapredicates/')),
assertz(logtalk_library_path(mi, '$LOGTALKUSER/examples/mi/')),
assertz(logtalk_library_path(miscellaneous, '$LOGTALKUSER/examples/miscellaneous/')),
assertz(logtalk_library_path(msglog, '$LOGTALKUSER/examples/msglog/')),
assertz(logtalk_library_path(operators, '$LOGTALKUSER/examples/operators/')),
assertz(logtalk_library_path(parametric, '$LOGTALKUSER/examples/parametric/')),
assertz(logtalk_library_path(poem, '$LOGTALKUSER/examples/poem/')),
assertz(logtalk_library_path(points, '$LOGTALKUSER/examples/points/')),
assertz(logtalk_library_path(polygons, '$LOGTALKUSER/examples/polygons/')),
assertz(logtalk_library_path(profiling, '$LOGTALKUSER/examples/profiling/')),
assertz(logtalk_library_path(puzzles, '$LOGTALKUSER/examples/puzzles/')),
assertz(logtalk_library_path(reflection, '$LOGTALKUSER/examples/reflection/')),
assertz(logtalk_library_path(relations, '$LOGTALKUSER/examples/relations/')),
assertz(logtalk_library_path(roots, '$LOGTALKUSER/examples/roots/')),
assertz(logtalk_library_path(searching, '$LOGTALKUSER/examples/searching/')),
assertz(logtalk_library_path(shapes_ch, '$LOGTALKUSER/examples/shapes/ch/')),
assertz(logtalk_library_path(shapes_ph, '$LOGTALKUSER/examples/shapes/ph/')),
assertz(logtalk_library_path(sicstus, '$LOGTALKUSER/examples/sicstus/')),
assertz(logtalk_library_path(symdiff, '$LOGTALKUSER/examples/symdiff/')),
assertz(logtalk_library_path(viewpoints, '$LOGTALKUSER/examples/viewpoints/')))).

22
Logtalk/library/NOTES
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
@ -9,10 +9,15 @@ Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
This folder contains some useful objects, categories, and protocols.
To load a group of objects, protocols, and categories in this library
change your Prolog working directory to this folder and then compile
and load the corresponding loader utility file. Currently, there are
eight groups of entities defined, each one with a loader and a notes
file:
either change your Prolog working directory to this folder and then
compile and load the corresponding loader utility file or simply use
the notation library(<loader file>) as argument for the compiling and
loading predicates. For example:
| ?- logtalk_load(library(random_loader)).
Currently, there are eight groups of entities defined, each one with
a loader and a notes file:
dates
dates_loader.lgt
@ -47,12 +52,9 @@ file:
types.notes
There is also a file named all_loader.lgt that will load all entities in the
groups listed above.
groups listed above. Simply type the goal:
To compile and load the loader files type you may use the Logtalk built-in
predicate logtalk_load/1. For example:
| ?- logtalk_load(all_loader).
| ?- logtalk_load(library(all_loader)).
Specific notes about each group of objects, categories, and protocols can be
found in the corresponding *.notes files.

2
Logtalk/library/SCRIPT
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

2
Logtalk/library/all.notes
View File

@ -1,7 +1,7 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

2
Logtalk/library/dates.notes
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

2
Logtalk/library/debugging.notes
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

2
Logtalk/library/dependents.notes
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

2
Logtalk/library/events.notes
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

2
Logtalk/library/experimental/NOTES
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

2
Logtalk/library/experimental/amzi/system.lgt
View File

@ -26,7 +26,7 @@
working_directory(Directory) :-
{curdir(Directory, Directory)}.
{curdir(Directory)}.
directory_exists(Directory) :-

2
Logtalk/library/experimental/b/system.lgt
View File

@ -23,7 +23,7 @@
working_directory(Directory) :-
{fail}.
{system(pwd, Directory)}.
directory_exists(Directory) :-

2
Logtalk/library/experimental/quintus/system.lgt
View File

@ -28,7 +28,7 @@
working_directory(Directory) :-
{fail}.
{absolute_file_name('.', Directory)}.
directory_exists(Directory) :-

2
Logtalk/library/hierarchies.notes
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

2
Logtalk/library/metapredicates.notes
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

2
Logtalk/library/random.notes
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

2
Logtalk/library/systemp.lgt
View File

@ -40,7 +40,7 @@
'Directory does not exists' - existence_error(directory, 'Directory')]]).
:- public(working_directory/1).
:- mode(working_directory(?atom), one).
:- mode(working_directory(?atom), zero_or_one).
:- info(working_directory/1, [
comment is 'Current working directory (as an absolute file name).',
argnames is ['Directory'],

2
Logtalk/library/types.notes
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

2
Logtalk/manuals/NOTES
View File

@ -1,6 +1,6 @@
=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.6
Release 2.22.0
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================

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