Re: Readline using foreach and while

"s" == szr <szrRE@xxxxxxxxxxxxxxx> writes:

>> Absolutely not. my %h = map { $_ => 1 } qw/a b c/; is quite a common
>> idiom.

s> Well, you're still getting that many *sets* which is probably what I
s> should of said, or have been clearer. In that example, you get 3 set of
s> hash pairs resulting from the 3 element list. The point is you get
s> count_of_passed_list amount of something from the map, in some form or
s> another. How exactly it's returned is determined by the template inside
s> the map.

you are still missing the picture. map can return ANY number of elements
(not sets). it executes its expression/block once for each input element
but that can generate 0-?? elements which are appended to the return
list. there are no boundaries in those elements so there are no true
sets. if you return a reference which holds stuff you can force your own
boundaries and make sets. that is also a known map idiom. map generates
a new list from input from another list. the transformation can be
anything and isn't tied to how many input elements there are.

uri

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