75392e54c7
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@757 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
58 lines
1.2 KiB
Plaintext
58 lines
1.2 KiB
Plaintext
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:- protocol(metap).
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:- info([
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version is 2,
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date is 2000/7/24,
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author is 'Paulo Moura',
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comment is 'Useful meta-predicates protocol.']).
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:- public(apply/2).
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:- mode(apply(+callable, +list), zero_or_more).
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:- info(apply/2, [
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comment is 'Applies a predicate to list of arguments.',
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argnames is ['Predicate', 'List']]).
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:- public(callable/1).
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:- mode(callable(@term), zero_or_one).
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:- info(callable/1, [
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comment is 'True if the argument can be called as a goal.',
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argnames is ['Term']]).
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:- public(filter/3).
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:- mode(filter(+callable, +list, -list), one).
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:- info(filter/3, [
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comment is 'Returns a list of all list elements that satisfy a predicate using apply/2.',
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argnames is ['Predicate', 'In', 'Out']]).
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:- public(map/3).
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:- mode(map(+callable, ?list, ?list), zero_or_more).
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:- info(map/3, [
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comment is 'Maps a predicate over a list of elements using apply/2.',
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argnames is ['Predicate', 'In', 'Out']]).
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:- public(succeeds/2).
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:- mode(succeeds(+callable, +list), zero_or_more).
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:- info(succeeds/2, [
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comment is 'True if the predicate succeeds for each list element using apply/2.',
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argnames is ['Predicate', 'List']]).
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:- end_protocol.
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