What is it that prohibits assignment in loop to work when combined with declaration (my)? Why can't perl just DWIM (which is to set $i = 3 in both examples below)? 
$ perl -l
use strict;
use warnings;

my $i = undef;
$i = $_ for (1 .. 3);
($i) ? print $i : warn "pre-defined - missing";

my $j = $_ for (1 ..3);
($j) ? print $j : warn "direct - missing";

__END__
3
direct - missing at - line 9.

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I just wonder since, after all, it does what I mean without warnings and my: 
$ perl -l
$j = $_ for (1 ..3);
($j) ? print $j : warn "no warnings - missing";
__END__
3

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For the record: 
This is perl, v5.8.5 built for i386-linux-thread-multi

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--
No matter how great and destructive your problems may seem now, remember, you've probably only seen the tip of them. [1]

In reply to Assign in loop with and without declaration by andreas1234567

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