Availability:C-language interface function
atom_t PL_new_atom(const
char *)Return an atom handle for the given C-string. This function always
succeeds. The returned handle is valid as long as the atom is referenced
(see section
12.4.2.1). The following atoms are provided as macros, giving access
to the empty list symbol and the name of the list constructor. Prior to
version 7, ATOM_nil is the same as PL_new_atom("[]")
and ATOM_dot is the same as
PL_new_atom(".").
This is no long the case in SWI-Prolog version 7.
- atom_t ATOM_nil(ATOM_nil)
- tomic constant that represents the empty list. It is adviced to use PL_get_nil(), PL_put_nil()
or PL_unify_nil()
where applicable.
- atom_t ATOM_dot(ATOM_dot)
- tomic constant that represents the name of the list constructor. The
list constructor itself is created using
PL_new_functor(ATOM_dot,2).
It is adviced to use
PL_get_list(), PL_put_list()
or PL_unify_list()
where applicable.