Re: [Bug-apl] Extension proposal: ⍵⍵ to access outer lambda

[Elias Mårtenson]

On 10 July 2014 08:03, Kacper Gutowski <address@hidden> wrote:

I think the main problem isn't the length of variable's name but the

fact that regular variable is neither lexically scoped nor localized.

This is exactly my concern.

 

Using ⍵⍵ might be confusing for Dyalog users where ⍺⍺ and ⍵⍵ are used
as functional arguments of dfn operators.  But since GNU APL uses ⍶
and ⍹ for those and it doesn't localize variables in dfns, using
repeated ⍺/⍵ for nested arguments doesn't sound that bad.

Yes, this is precisely my opinion. It also translates well to the outer-outer arguments like ⍵⍵⍵. One might also consider something like ⍶⍶ to refer to an outer function argument as well.

Regards,

Elias