RE: callback implementation details..

[Eric Tetz <erictetz@...>]

--- Reuben Thomas <rrt@sc3d.org> wrote:
> I don't think you're right: in the code below:
> 
> > function curry (f, ...)
> >   return function (...)
> >     return f (unpack(arg))
> >   end
> > end
> 
> you don't keep the fixed arguments. All you do is call f on
whatever the
> function gets, i.e. your curry (f) is the same as f.

Well, I stated the wrong reason (which I realized the second I
clicked "submit"). You don't need 'fix' because you already have a
local to bind the closure to: 'arg'.

This function:

> function curry (f, ...)
>   local fix = arg
>   return function (...)
>            return f (unpack (fix), unpack (arg))
>          end
> end

Creates a second local referring to the same table, then passes
passes the same argument list to 'f' twice.


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