perl foreach looping arrays, simple question

Question

Really simple perl question, but confusing me greatly.

foreach $val (@{$obj->something()}) {
    # this works
}

@array = $obj->something();
foreach $val (@array) {
    # this does not
}

What do i need to do to make the second work (i.e: assign the array seperately), i've used the first form a fair bit but dont really understand what it does differently.

mscha · Accepted Answer · 2010-11-11 11:24:41Z

9

Probably:

@array = @{$obj->something()};

From the first example, it looks like $obj->something() returns an array reference, you'll need to dereference it.

Also, you should really use strict; and use warnings;, and declare your variables like

my @array = @{$obj->something()};
foreach my $val (@array) {
    # this does not
}

This will make it much easier to find mistakes (although probably not this one), even in a three line script.

edited Nov 11, 2010 at 11:24

answered Nov 11, 2010 at 10:35

mscha

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