I've done that! For two reasons, one good, one bad.

Bad Reason

I thought

for my $i (1..10) {
   # some stuff with $i
}
[download]

was the same as

my $i;
for $i (1..10) {
   # some stuff with $i
}
[download]

rather than being the same as

{
   my $i;
   for $i (1..10) {
      # some stuff with $i
   }
}
[download]

because in C++, (IIRC)

for (int i=0, i<5; i++) {
   ...
}
// i in still in scope here!
[download]

.

I didn't do use int as shown here, but my coworkers did and I would find it misleading. Perl doesn't have that problem, but I only learned that recently.

Good Reason

This fails ('Modification of a read-only value attempted')

foreach my $var ('a', 'b') {
   ...something that may modify $var...
   print($var);
}
[download]

but this doesn't

foreach ('a', 'b') {
   my $var = $_;
   ...something that may modify $var...
   print($var);
}
[download]

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