tests whether the argument is an atom. ...
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See also
atom/1
atomic/1
compound/1
float/1
integer/1
nonvar/1
number/1
var/1
IF Computer > MINERVA > Manual > Reference > Predicates > Type testing > atom/1

atom/1

tests whether the argument is an atom.

atom(+Term)

atom/1 succeeds if Term is an atom otherwise it fails.

Arguments 

Term                   term

Examples

atom('this is an atom'). Succeeds.
atom([]). Succeeds.
atom(Var). Fails.
atom([a,t,o,m]). Fails.

Standard

This predicate is part of the ISO-Prolog Standard.

See also

atomic/1, compound/1, float/1, integer/1, nonvar/1, number/1, var/1.

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document: http://www.ifcomputer.co.jp/MINERVA/Manual/Reference/Predicates/type_test/atom/home_en.html
published 2012/2/6 update 1997/6/22 (c) 1996-2009 IF Computer Japan
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