Q: A way to determine if function is defined

["Maciej Maczynski" <macmac@...>]

Hi everybody,

Is there a method in Lua to check from within a script if the function is
defined?
I mean, before "call expression not a function" error appears.
What I figured out, is trying to invoke the function in question using
"call", providing own handler.
Does anybody know nicer solution?

Maciej