Re: Random thought: short lambda syntax (no patching required!)

[Philipp Janda <siffiejoe@...>]

Am 26.05.2014 20:16 schröbte Rena:
> On 2014-05-25 9:25 PM, "Philipp Janda" <siffiejoe@gmx.net> wrote:
> > Traditionally[1], the function is called `fn` and uses P1-P9 for
> parameters and L1-L9 for upvalues.
> >    [1]: http://lua-users.org/wiki/ShortAnonymousFunctions
>
> That does look more elegant than doing string substitution, though I wonder
> about the overhead of having 9 parameters.

The bytecode doesn't change as long as you don't use the parameters, so 
I guess there will be little runtime overhead. The Proto objects 
increase by 16 bytes per parameter (on x86_64; probably 12 bytes on 32 
bit machines). On the plus side you don't create a table on every call 
(but you have to be careful with your caching or you will create a new 
closure, even if you don't use the local variables L1-L9) ...

Philipp