atomic_list_concat/4¶

atomic_list_concat(? As,+ Separator,? A)*

Creates an atom just like atomic_list_concat//22, but inserts Separator between each pair of atoms. For example:

 ?- atomic_list_concat([gnu, gnat], `, `, A).
 A = `gnu, gnat`

YAP emulates the SWI-Prolog version of this predicate that can also be used to split atoms by instantiating Separator and Atom as shown below.

 ?- atomic_list_concat(L, -, 'gnu-gnat').
 L = [gnu, gnat]