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Re: Find unique elements in an array

by dragonchild (Archbishop)
on Apr 05, 2004 at 03:14 UTC ( #342560=note: print w/replies, xml ) Need Help??


in reply to Find unique elements in an array

My personal unique'ing function is:
sub unique { my %x; @x{@_} = @_; values %x }

The reason to use values is that I need to get the unique set from an array of objects, not scalars. (This assumes, of course, that every object has a unique stringification. As I don't overload stringification in my objects, this works. If you do overload stringification ... good luck. Seriously.)

And, the reason for not using references is that I use this function as so:

my @final = map { # Something } unique grep { # Something } map { # Something } @start;

------
We are the carpenters and bricklayers of the Information Age.

Then there are Damian modules.... *sigh* ... that's not about being less-lazy -- that's about being on some really good drugs -- you know, there is no spoon. - flyingmoose

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