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How do I create a new array in memory?

by Buckaroo Buddha (Scribe)
on Jun 27, 2000 at 01:20 UTC ( #19919=categorized question: print w/replies, xml ) Need Help??
Contributed by Buckaroo Buddha on Jun 27, 2000 at 01:20 UTC
Q&A  > arrays


Description:

Hi there,
I'm trying to figure out how to make sure each array claims its own memoryspace.

How do I do that? 

    while <> {
         @record = split(',',$_);
         $key = shift(@record);
         $list{$key} = \@record;
    }

[download]

Answer: How do I create a new array in memory?
contributed by btrott

You need to declare the variable lexically with my: 

    while (<>) {
        my @record = split /,/;
        my $key = shift @record;
        $list{$key} = \@record;
    }

[download]
You can test this by printing out the array references; they should all have different addresses: 
    print join "\n", values(%list), '';

[download]
Answer: How do I create a new array in memory?
contributed by davorg

The other way to do it is to take a copy of the array each time by using the anonymous array constructor.

while (<>) {
  my @record = split /,/;
  my $key = shift @record;
  $list{$key} = [@record];
}

[download]

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