fd95dab3a7
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1151 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
88 lines
3.9 KiB
Plaintext
88 lines
3.9 KiB
Plaintext
=================================================================
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Logtalk - Object oriented extension to Prolog
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Release 2.21.1
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Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
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=================================================================
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Upgrading from Logtalk 1.x
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==========================
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Logtalk 2.x is not compatible with programs written for version 1.x.
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However, you should be able to translate most programs to make them
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run under this new version. Most of the examples provided with previous
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versions have been rewritten to run under version 2.x. Use them as
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translation examples.
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Upgrading from a previous Logtalk 2.x version
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=============================================
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If your Logtalk programs depend on some of the example files, it is
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advisable that you check your code against the new version before
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throwing away the older release.
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Logtalk source files will need to be recompiled because of the changes
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done in the version 2.5.0 to improve message sending performance.
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Logtalk version 2.7.0 provides the first cut of the Logtalk standard library.
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Most examples have been rewritten to take advantage of the library.
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Logtalk version 2.8.0 introduces a small change on the logtalk_compile/1-2
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and logtalk_load/1-2 predicates that may imply updating your loader utility
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files: the first argument is now always a list of entities even if we want
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to compile or load a single entity.
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Logtalk version 2.9.0 changes compiled code functors postfixes from "_sdcl"
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and "_sdef" to "_idcl" and "_idef", implying recompilation of all objects,
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protocols, and categories.
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Logtalk version 2.10.0 changes some of the semantics of object dynamic
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predicates. See the release notes for a description of the changes.
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Logtalk version 2.14.4 removes the definition of the deprecated built-in
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predicate logtalk_version/3 (use current_logtalk_flag/3 instead).
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Logtalk version 2.14.5 changes compiled code in order to correct a bug
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where sending messages such as true/0 to an unknown object will succeeded
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instead of throwing the expected exception, implying recompilation of all
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objects, protocols, and categories.
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Logtalk version 2.14.7 changes compiled code in order to optimize the
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code generated by the compilation of dynamic predicate clauses.
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Logtalk version 2.15.0 changes the "authors" key in the directive info/1 to
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"author". All the XSLT, DTD, and XSD files have been update to conform to
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this change. If you use the directive info/1 in your programs, you will need
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to apply this change to take advantage of automatic generation of documenting
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files.
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Logtalk version 2.15.3 changes the format of the runtime entity tables,
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implying recompilation of all objects, protocols, and categories.
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Logtalk version 2.15.6 renamed the compiler option "named_anonymous_vars" to
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"underscore_vars" and changed the possible option values form "on/off" to
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"dont_care/singletons".
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Logtalk 2.16.0 improves support for the declaration and use of operators
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local to objects and categories. Recompilation of any objects and categories
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containing operator declarations is needed in order to take advantage of the
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improvements made.
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Logtalk 2.16.1 now checks for attempts to redefined built-in Logtalk control
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constructs when compiling source files. These checks may generate compilation
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errors on files containing bugs that are not detected on previous versions of
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the compiler.
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Logtalk version 2.16.2 changed the possible option values of the read-only
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compiler option "startup_message" to "none", "banner", and "flags". Default
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value is "flags" (print both banner and default flag values).
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Logtalk version 2.17.1 removes predicate nth/3 from library entities listp,
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list, and difflist (replaced by the predicates nth0/3 and nth1/3).
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Logtalk version 2.20.0 updates the semantics of the uses/1 entity directive
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to accept as argument a single object identifier (this change is needed in
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order to ensure compatibility with the new uses/2 predicate directive).
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