Re: Determine if function is defined with C API?

[Asko Kauppi <askok@...>]

http://www.lua.org/manual/5.1/manual.html#lua_isfunction


Joey Mukherjee kirjoitti 31.7.2008 kello 22:55:

> Is there a way from the C API to determine if a Lua function is  
> defined?
>
> If a Lua function is defined, I wish to call it, otherwise I want to  
> default to some other behavior, but it is not really an error.
>
> How would I do something like this?  From lua_pcall, I get a return  
> value of 2 but is this defined somewhere?  Should I just check for  
> that value or is there a preferred constant?
>
> Thanks,
> Joey