Re^2: 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 ? $_ : () } @_;
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rather than

    grep { !$h{$_}++ } @_;
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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: Does it work? Can someone else come in, make a change, and be reasonably certain no bugs were introduced?	[reply]