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makes a copy of a term.
copy_term(+Term1, -Term2)
unifies Term2 with a copy of Term1 where all variables in Term1 are replaced by new variables.
Arguments
Term1 term Term2 term
Examples
| copy_term(f(a,b), X). | Succeeds with substitution X <- f(a,b). |
| copy_term(f(A,B,A),C). | Succeeds with substitution C <- f (_1,_2,_1). |
| copy_term(f(a, g(b,C)), f(A,Y)). | Succeeds with substitution A <- a, Y <- g(b,_1). |
| copy_term(f(a,b), f(a,d)). | Fails. |
Standard
This predicate is part of the ISO-Prolog Standard.
See also
arg/3, functor/3, '=..'/2.
| document: http://www.ifcomputer.co.jp/MINERVA/Manual/Reference/Predicates/term_creat_decomp/copy_term/print_en.html published 2008/10/6 update 1998/8/7 (c) 1996-2006 IF Computer Japan | ||||||||
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