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There are two ways of passing data to a subroutine:

- call by value
- call by reference

References are always a good idea - especially if you have large or complex datastructures, but using values is much easier in the beginning. Here's an example that I've posted earlier this day on a german perl-community site. Two array-references gets passed to a function in an anonymous hash:

#!/usr/bin/perl use strict; use warnings; use Data::Dumper; my @numbers = (1..10); my @words = qw(hello world outside); function( {NUMBERS=>\@numbers , WORDS=>\@words} ); exit; sub function { die "no parameter!\n" unless @_; my %opt = %{ shift @_ }; print Dumper \%opt; my @i_words = $opt{WORDS}; print Dumper \@i_words; my @i_numbers = $opt{NUMBERS}; print Dumper \@i_numbers; }

In reply to Re: passing arrays to subroutines by neniro
in thread passing arrays to subroutines by Anonymous Monk

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