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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


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; }

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

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