in reply to iterating through array and saving matches to new array

A funny alternative:

#!/usr/bin/env perl

use strict;
use warnings;
use Iterator::Simple qw(iter igrep  list);
use Data::Dump;

dd list ( igrep { $_ > 850 } iter([1..1000]));

__END__

[download]

Please see also Iterator::Simple.

Best regards, Karl

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