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Re^2: Is there an easy way to assign guaranteed unique values to a simple array without looping through whole array?

by mreece (Friar)
on Nov 30, 2007 at 04:35 UTC ( #654037=note: print w/replies, xml ) Need Help??


in reply to Re: Is there an easy way to assign guaranteed unique values to a simple array without looping through whole array?
in thread Is there an easy way to assign guaranteed unique values to a simple array without looping through whole array?

curiously, (the pure-perl version of) List::MoreUtils::uniq uses
map { $h{$_}++ == 0 ? $_ : () } @_;
rather than
grep { !$h{$_}++ } @_;
i wonder, a simple preference or are there interesting micro-optimizations in the map verison?
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Re^3: Is there an easy way to assign guaranteed unique values to a simple array without looping through whole array?
by dragonchild (Archbishop) on Nov 30, 2007 at 13:36 UTC
    I have no idea. If I were to guess, I would say that it probably has to do with a bug report that was received for 5.6.0 on some random OS we've never heard of. Lack of comments make this unclear.

    My criteria for good software:
    1. Does it work?
    2. Can someone else come in, make a change, and be reasonably certain no bugs were introduced?

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