Re: tr/// on a list

it seems not terribly perlish.

Well actually, a foreach is actually quite perlish. To be terribly perlish, one would shorten it down to a for modifier that operates on $_ implicitly aliasing over each element

for (@beatles) {
    tr /A-Z/a-z/
}
[download]

written more concisely as

tr /A-Z/a-z/ for @beatles;
[download]

which is probably more elegant than a vulgar map.

@beatles = map {lc} @beatles;
[download]

update: gah! I do ramble on.

• another intruder with the mooring in the heart of the Perl

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Re^2: tr/// on a list by GrandFather (Saint) on Sep 14, 2007 at 22:37 UTC
Because map operates on an alias of each element you don't need to assign the result of the map anywhere: `map {$_= lc} @beatles;` [download] However map in a void context is frowned on so it would be more usual to use for/foreach as a statement modifier: `$_ = lc for @beatles;` [download] DWIM is Perl's answer to Gödel	[reply] [d/l] [select]