:

X=..L

X=..L

functor arg . =.. , , . X=..L , L , X, X. , functor. X , L. , X , , X. ( X). , =..:

?- (,b,) =.. X.

X = [,,b,]

?- ([|],, [A|D]) =..L.

A = _2, = _3, = _4, D = _5, L = [,[_2|_3],_4,[_2|_5]]

?- [a,b,c,d] =..L.

L = ['.',a,[b,c,d]].

?- (a+b) =.. L.

L = [+,a,b].

?- (a+b) =..

[+,A,B] A = , = b

?- [a,b,c,d] =..

[A|B] A = '.', = [a,[b,c,d]]

?- X =.. [a,b,c,d]

X = a(b,c,d).

?- X =.. [,[a,b,],[c],[a,b,c]].

X = ([,b],[],[,b,])

=.. . 7.12.


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