Re^2: Internally, how do for() and while() differ?

[GotToBTru]

The two examples are equivalent in operation, since they have the <> operator around a file handle. In the case of arrays, which the OP did not specify, you are correct. Unless, again, the <> operator is used.

@a = qw(a b c);
for(<@a>)   { print "$_\n" };
while(<@a>) { print "$_\n" };

Both produce the same output, the while loop with considerably more efficiency for large datasets.

[LanX]

> Unless, again, the <> operator is used.

Sorry for nitpicking, but IMHO it's not the same "operator" here.

The OP uses a readline and you are applying a glob.^*

That's one of the more confusing magic features of Perl, so I'm open for further discussion on this matter.

^*) similarly are range and flipflop different, even when written with ..

[GotToBTru]

The way 'for' versus 'while' works seems to be a good case for learning how the magic works, at least a little bit.