42aabce1bb
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1973 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
40 lines
1.3 KiB
Plaintext
40 lines
1.3 KiB
Plaintext
================================================================
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Logtalk - Open source object-oriented logic programming language
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Release 2.30.7
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Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved.
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================================================================
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To load this example and for sample queries, please see the SCRIPT file.
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This folder contains examples of public, protected, and private inheritance,
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for both prototype-based and class-based hierarchies.
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This example defines a category named "predicates" which specifies three
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predicates, one public, one protected, and one private. This category is
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imported by the root objects: "parent" for the prototype hierarchy and
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"root" for the class hierarchy. Each root object have a set of three
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descendants, each one using one of the inheritance types.
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The two object hierarchies are organized as follows:
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parent
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prototype1 % public inheritance
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descendant1
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prototype2 % protected inheritance
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descendant2
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prototype3 % private inheritance
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descendant3
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root
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subclass1 % public inheritance
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instance1
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subclass2 % protected inheritance
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instance2
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subclass3 % private inheritance
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instance3
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A second category named "interface", imported by all objects except the
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sub-class instances, allows us to query the objects about their interfaces.
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