Zeus Odin wrote:
The reason why you don't get the uninitialized warning in the 2nd and 3rd examples below is that your print is within the for loop. Since both @files and keys %files contain nothing, the innards of the for loop NEVER get executed. Therefore, the print is not attempted at all for examples 2 and 3.
Correct, except I still think @ ans % don't get uninitialized value warnings while $ does:
$perl -mstrict -we 'my $foo;print "hi\n" for $foo;' hi $
That shows what you said to be accurate.
Then no error: $ perl -mstrict -we 'my @foo;print @foo;' $ $ perl -mstrict -we 'my %foo;print %foo;' $
Error: $ perl -mstrict -we 'my $foo;print $foo;' Use of uninitialized value in print at -e line 1. $
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