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executes a goal.
call(?Goal)
call/1 succeeds if Goal is executable. By backtracing
Goal can have more than one solution.
The effect of a cut occuring in Goal is limited to this goal. It
has no effect outside of call/1.
call/1 is a metacall.
Arguments
Goal goal
Examples
| X=integer(3), call(X). | Succeeds. |
| call(write('hallo')). | Succeeds. |
| call(!),fail;true. | Succeeds. |
| call((!,fail;true)). | Fails. |
| X=f(a),call(X). | existence_error(procedure,f/1). |
Standard
This predicate is part of the ISO-Prolog Standard.
See also
abort/0, break/0, fcall/1, catch/3, ','(conjunction)/2, '!'(cut)/0, ';'(disjunction)/2, fail/0, true/0, halt/0/1, '->'(if-then)/2, ';'(if-then-else)/2, '\+'(not provable)/1, once/1, repeat/0, throw/1.
| document: http://www.ifcomputer.co.jp/MINERVA/Manual/Reference/Predicates/logic_and_control/call/print_en.html published 2008/12/1 update 2001/2/7 (c) 1996-2006 IF Computer Japan | ||||||||
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