Re: glade signals with user data

[Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) @ Pike (-) developers forum]

No, that is not needed.  An object which has a method `() of type
function(a:b) is assignable to a variable/formal parameter of type
function(a:b).  So just "function" will do, although in general I'd
recommend specifying the argument and return types as well, for better
static typechecking.