| 1 | ================================================================= |
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| 2 | Logtalk - Object oriented extension to Prolog |
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| 3 | Release 2.20.2 |
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| 4 | |
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| 5 | Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved. |
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| 6 | ================================================================= |
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| 7 | |
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| 8 | |
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| 9 | This folder contains several examples of Logtalk programs. A brief |
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| 10 | description of each example is included below. |
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| 11 | |
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| 12 | Each example folder contains a NOTES file and a loader helper file which |
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| 13 | may be used to load all the example entities. In addition, most examples |
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| 14 | contain a SCRIPT file with sample queries for your to try. |
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| 15 | |
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| 16 | Most of these examples need objects, protocols, and categories which are |
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| 17 | defined in the Logtalk standard library or in other examples, so you |
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| 18 | should load them first (see the NOTES files inside the library folder and |
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| 19 | the NOTES file inside each example folder). |
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| 20 | |
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| 21 | Some examples may redefine objects already loaded from other examples. |
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| 22 | You may want to restart Logtalk after trying each example. |
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| 23 | |
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| 24 | Some of the examples code have been adopted from public available Prolog |
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| 25 | code and from known Prolog text books and are copyrighted by the respective |
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| 26 | authors. |
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| 27 | |
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| 28 | These are programming examples, meaning that you should study the source |
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| 29 | files to fully understand them. |
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| 30 | |
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| 31 | All examples are formatted using four spaces tabs. |
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| 32 | |
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| 33 | By default, compiling an example generates a .xml documenting file for each |
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| 34 | compiled entity (object, category, or protocol). See the xml folder for |
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| 35 | instructions on how to browse the .xml files for on-line reading or how to |
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| 36 | convert the files to a print-ready format such as PDF. |
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| 37 | |
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| 38 | |
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| 39 | Here is a short description of each included example: |
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| 40 | |
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| 41 | birds |
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| 42 | bird identification expert system |
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| 43 | example adopted from the Adventure in Prolog Amzi! book |
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| 44 | |
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| 45 | bricks |
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| 46 | example of representation and handling of relations using events |
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| 47 | |
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| 48 | classvars |
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| 49 | example of implementation of class variables (as found in Smalltalk) |
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| 50 | |
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| 51 | dcgs |
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| 52 | examples of using DCG rules inside objects and categories |
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| 53 | |
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| 54 | dynpred |
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| 55 | example of using some of the built-in database handling methods |
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| 56 | |
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| 57 | errors |
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| 58 | example showing the Logtalk compiler warning and error reporting |
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| 59 | |
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| 60 | inheritance |
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| 61 | examples of public, protected and private inheritance with both |
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| 62 | prototypes and classes/instances |
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| 63 | |
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| 64 | instmethods |
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| 65 | example of instance defined methods |
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| 66 | |
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| 67 | lo |
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| 68 | examples adopted from the Francis G. McCabe L&O system |
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| 69 | |
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| 70 | logic |
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| 71 | example of a translator of logic propositions to clauses in conjunctive |
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| 72 | normal form |
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| 73 | |
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| 74 | lpa |
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| 75 | examples adopted from the LPA Prolog++ system |
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| 76 | |
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| 77 | metapredicates |
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| 78 | example of using metapredicates in Logtalk objects |
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| 79 | |
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| 80 | metainterpreters |
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| 81 | some examples of simple metainterpreters |
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| 82 | |
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| 83 | mi |
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| 84 | multi-inheritance examples |
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| 85 | |
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| 86 | miscellaneous |
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| 87 | unsorted examples |
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| 88 | |
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| 89 | msglog |
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| 90 | example of using events and monitors for recording, replaying, and |
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| 91 | printing user messages |
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| 92 | |
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| 93 | operators |
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| 94 | example of using operators local to objects and categories |
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| 95 | |
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| 96 | parametric |
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| 97 | simple example of parametric objects |
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| 98 | |
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| 99 | poem |
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| 100 | examples adopted from the Ben Staveley-Taylor POEM system |
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| 101 | |
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| 102 | points |
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| 103 | example adopted from SICStus Objects documentation |
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| 104 | |
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| 105 | polygons |
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| 106 | example of representation and handling of relations using events |
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| 107 | |
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| 108 | profiling |
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| 109 | examples of using of events and monitors to implement profilers |
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| 110 | |
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| 111 | puzzles |
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| 112 | several examples of logical puzzles |
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| 113 | |
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| 114 | reflection |
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| 115 | example of a simple class-based reflective system |
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| 116 | |
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| 117 | relations |
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| 118 | objects implementing predicates for dealing with relations and |
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| 119 | constrained relations between objects |
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| 120 | |
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| 121 | roots |
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| 122 | objects, protocols and categories needed by most of the other examples |
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| 123 | |
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| 124 | searching |
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| 125 | state-space searching framework |
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| 126 | example adopted from Ivan Bratko's "Prolog Programming for Artificial |
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| 127 | Intelligence" book |
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| 128 | |
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| 129 | shapes |
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| 130 | geometric shapes implemented as both a prototype hierarchy and a class |
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| 131 | hierarchy |
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| 132 | |
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| 133 | sicstus |
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| 134 | examples adopted from SICStus Objects documentation |
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| 135 | |
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| 136 | symdiff |
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| 137 | example of using parametric objects to implement symbolic expression |
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| 138 | differentiation and simplification |
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| 139 | |
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| 140 | viewpoints |
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| 141 | example on how to implement property and value sharing with prototypes |
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