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Think about Loose Coupling

Re^2: references best practice

by Haarg (Chaplain)
on Apr 25, 2008 at 22:51 UTC ( #682947=note: print w/ replies, xml ) Need Help??

in reply to Re: references best practice
in thread references best practice

Your second example isn't doing what you intend. The array outside of the sub isn't modified. The first line of prepData2 sets $refData to the incoming reference. The second replaces that reference with a different one, leaving the contents of the first reference unchanged. You'd want something more like:
sub prepData2 { my $refData = shift; @$refData = map { log $_ } 1 .. 100; }
With that change, the benchmark changes somewhat, making it almost identical to array_ref_out1 in my tests.

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