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Postings from March 2002
Hi list!
I've always thought there's a difference between for and foreach, that
for uses copies and foreach not. But there's no diff is there?
my @a = (1, 2, 3 , 4 , 5);
$_ += 2 for (@a);
print "@a\n";
3 4 5 6 7
my @a = (1, 2, 3 , 4 , 5);
$_ += 2 foreach (@a);
print "@a\n";
3 4 5 6 7
why isn't it possible to write:
$b += 2 for my $b (@a);
but possible to write
for my $b (@a) {$b += 2};
case 2
my @a = (1, 2, 3 , 4 , 5);
for (my $i = 0; $i <= $#a;$i++)
{
print $a[$i], ' ';
}
print "\n";
1 2 3 4 5
my @a = (1, 2, 3 , 4 , 5);
foreach (my $i = 0; $i <= $#a;$i++)
{
print $a[$i], ' ';
}
print "\n";
1 2 3 4 5
so, is foreach only an alias for for or is there some diff?
/Jon
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