Re^3: string diff and compare

my ( $rold, $rnew ) = map scalar reverse, $old, $new;
[download]

Is just a different way of saying:

my $rold = reverse $old;
my $rnew = reverse $new;
[download]

You need to use scalar because reverse is in list context in the map expression.

Comment on Re^3: string diff and compare Select or Download Code

Replies are listed 'Best First'.
Re^4: string diff and compare by tobyink (Canon) on May 05, 2012 at 07:17 UTC
There are other ways of enforcing scalar context which are a lot more fun. :-) `use 5.010; use strict; use warnings all => 'FATAL'; my ( $old, $new ) = qw( old new ); my ( $rold, $rnew ) = map~~reverse, $old, $new; say for "$old => $rold", "$new => $rnew";` [download] `perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'`	[reply] [d/l]