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Re^2: *IN* Operator for the Perl wish list

by liz (Monsignor)
on Mar 30, 2007 at 16:31 UTC ( #607518=note: print w/ replies, xml ) Need Help??


in reply to Re: *IN* Operator for the Perl wish list
in thread *IN* Operator for the Perl wish list

Rather than "grep", I would use List::Util's "first" function, because that short-circuits on the first match, rather than always trying all of the elements.

Liz


Comment on Re^2: *IN* Operator for the Perl wish list
Re^3: *IN* Operator for the Perl wish list
by ysth (Canon) on Mar 30, 2007 at 17:33 UTC
    I haven't benchmarked it, but I suspect first has significantly more overhead, so might only be of benefit for long lists. I'd be interested in seeing a benchmark.

    Update: yes, I mean even the XS version

      Not necessarily -- List::Util has XS versions of all its functions.

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