Re: Syntax sugar for default arguments

[Tim Hill <drtimhill@...>]

Why can't you just use a wrapper function? Trivial to do, and doesn't need any patching:

function g(x, y)
	f(x, y or 0)
end

And of course, it's easy to wrap transparently:

do
	local fo = f
	function f(x, y)
		fo(x, y or 0)
	end
end

--Tim

On Apr 20, 2013, at 11:41 PM, Dirk Laurie <dirk.laurie@gmail.com> wrote:

>    function f(x,y=0)
>    function f(x,y or 0)
> 
> to mean
> 
>    function f(x,y) y=y or 0
> 
> Neither would break existing code.
> 
> Which of the above should I choose to implement as a patch?
>