This assigns the first element of @_ to $data. It is the same as writing 
my $data = $_[0];

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but is easier to generalize should more parameters be added: 
my ($data1, $data2) = @_;

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-Mark

In reply to Re: What does my ($data) = @_ mean? by kvale
in thread What does my ($data) = @_ mean? by chiburashka

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