[@array] can be/usually is written as \@array

Careful. The two are not the same. \@array returns a reference to the existing array. [@array] creates a new (anonymous) copy of the original array and returns a reference to the copy. It's a subtle difference, but an important one.

#!/usr/bin/perl use strict; use warnings; my @arr = (1 .. 5); my %hash = ( aref => \@arr, copy => [ @arr ], ); print "@{$hash{copy}}\n"; print "@{$hash{aref}}\n"; @arr = ('a' .. 'e'); print "@{$hash{copy}}\n"; # original values print "@{$hash{aref}}\n"; # changed values
--

See the Copyright notice on my home node.

Perl training courses


In reply to Re^2: Two arrays into hash by davorg
in thread Two arrays into hash by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":