Sometimes, no loop is needed at all:
chomp( my @list = <$fh> );
When using readline, it's probably not so serious, as you aren't changing the original array in place at the same time.
The /r is useful when you want to keep the original:
my @ids = map s/ /_/gr,
grep defined,
@base;
When you want to modify the original array, use "for" instead.
for (@$list) {
if (ref) {
...
} else {
$_ = ...;
}
}
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]
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