RE: There's gotta be a more "Lua" way to do this
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- Subject: RE: There's gotta be a more "Lua" way to do this
- From: "Nick Trout" <nick@...>
- Date: Wed, 2 Jul 2003 19:18:32 -0700
Lua 5.0 Copyright (C) 1994-2003 Tecgraf, PUC-Rio
> function cl(f,...) return function() pcall(f,unpack(arg)) end end
> f = cl(print,1,2,3)
> f()
1 2 3
> -----Original Message-----
> From: Curt Carpenter [mailto:curtc@microsoft.com]
> Sent: Wednesday, July 02, 2003 4:17 PM
> To: Lua list
> Subject: There's gotta be a more "Lua" way to do this
>
> What's the more "Lua" way to generically create a closure for a given
> function and its arbitrary arg list than the following:
>
> function closure(func,...)
> if arg.n == 0 then
> return function() return func() end
> elseif arg.n == 1 then
> return function() return func(arg[1]) end
> elseif arg.n == 2 then
> return function() return func(arg[1],arg[2]) end
> elseif arg.n == 3 then
> return function() return func(arg[1],arg[2],arg[3]) end
> elseif arg.n == 4 then
> return function() return func(arg[1],arg[2],arg[3],arg[4]) end
> elseif arg.n == 5 then
> return function() return
> func(arg[1],arg[2],arg[3],arg[4],arg[5]) end
> else
> assert(false)
> end
> end
>
> Thanks,
>
> Curt