Re: Lua "..." args

[David Jeske <jeske@...>]

On Wed, Dec 17, 1997 at 09:54:38PM -0200, Steve Dekorte wrote:
> It would be nice if, when I have a method using variable args, I
> could pass those args along to another function with the "..." syntax.
> Example:

uhm... pass them along with call();


> function SomeObject:myMethod(blah, ...)
>   return anotherObject:anotherMethod(...)
> end

How about just 

function SomeObject:myMethod(blah, ...)

   -- do something to shift all the args down one to make room at
   -- args[1];

   args[1] = anotherObject.anotherMethod; -- set "self" for the call()

   return call(anotherObject.anotherMethod,args);
end

> Instead of the uglier and more limited way:
> 
> function SomeObject:myMethod(blah, ...)
>     local argCount = tableLength(arg)
> 
>     if ( argCount == 0 ) then
> 	return anotherObject:anotherMethod(forwardMethod)
>     end
>     if ( argCount == 1 ) then
> 	return anotherObject:anotherMethod(forwardMethod, arg[1])
>     end
>     if ( argCount == 2 ) then
> 	return anotherObject:anotherMethod(forwardMethod, arg[1], arg[2])
>     end
>     if ( argCount == 3 ) then
> 	return anotherObject:anotherMethod(forwardMethod, arg[1], arg[2], arg[3])
>     end
> end
> 

-- 
David Jeske (N9LCA) + http://www.chat.net/~jeske/ + jeske@chat.net