75b2645e3f
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1580 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
51 lines
867 B
Plaintext
51 lines
867 B
Plaintext
=================================================================
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Logtalk - Object oriented extension to Prolog
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Release 2.27.1
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Copyright (c) 1998-2006 Paulo Moura. All Rights Reserved.
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=================================================================
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% start by loading the necessary library and support example files (if not
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% already loaded):
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| ?- logtalk_load(library(all_loader)).
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...
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| ?- logtalk_load(roots(loader)).
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...
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% now you are ready for loading the example:
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| ?- logtalk_load(shapes_ch(loader)).
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...
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% try some simple queries:
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| ?- square::nsides(N).
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! error(
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existence_error(predicate_declaration, nsides(_)),
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square::nsides(N),
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user)
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| ?- q1::(color(Color), side(Side), position(X, Y)).
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Color = red
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Side = 1
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X = 0
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Y = 0
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yes
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| ?- q2::(side(Side), area(Area), perimeter(Perimeter)).
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Side = 3
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Area = 9
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Perimeter = 12
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yes
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