
[;1m  is_function(Term)[0m

  Returns [;;4mtrue[0m if [;;4mTerm[0m is a fun, otherwise [;;4mfalse[0m.

[;1m  is_function(Term, Arity)[0m

  Returns [;;4mtrue[0m if [;;4mTerm[0m is a fun that can be applied with [;;4mArity[0m
  number of arguments, otherwise [;;4mfalse[0m.
