Hello Perl Monks,

I wrote the following program and the output really confused me. 

use warnings;
use strict;

my @a = ("a", "b", "c");
Foo(\@a);
print "$_ " foreach(@a);

sub Foo
{
  my $refA = shift;
  my @b = @$refA;
  $b[0] = "hello";
  $b[1] = "world";
  $b[2] = "Perl"; 
}

[download]

The output of the code was "a b c ".

How?? Didn't I pass a reference? If so, when I alter items against the reference, the change should be visible outside the subroutine as well!

I searched perl monks site found this node

but its still not clear to me... why were my changes lost.

regards,
Abhishek.

In reply to Changing items of an array in a function by abhishes

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