PlFunctor wraps functor_t, the internal
representation of a name/arity pair. A functor
name is a program object rather than arbitrarily encoded external data
and is therefore hard-wired to UTF-8, consistent with PlModule
and
PlPredicate (and the PL_predicate() C API);
these constructors take no PlEncoding argument.
- PlFunctor :: PlFunctor(functor_t handle)
- Create from a C-interface functor handle (
functor_t). Used
internally and for integration with the C-interface.
- PlFunctor :: PlFunctor(const char *name,
size_t arity)
- PlFunctor :: PlFunctor(const std::string&
name, size_t arity)
- PlFunctor :: PlFunctor(const std::wstring&
name, size_t arity)
- Create a functor from name and arity. The
char*
and std::string name is interpreted as UTF-8.
See
PL_new_functor() and PL_new_atom_mbchars().
- PlFunctor :: PlFunctor(PlAtom name, size_t
arity)
- Create a functor from an existing
PlAtom and arity.
See
PL_new_functor().
- bool is_null()
- bool not_null()
- Test whether the wrapped
functor_t handle is null.
