Given that you know what it does, it means:

Instantiate a scalar called $data, put it in a list of one element, then assign to that one-element list the contents of list @_. Because the left-hand side contains only one element, only one element (the first) is copied from @_.

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

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