sort() is an inbuilt function. It returns a sorted version of the array you pass it. If you want to keep that sorted array you need to assign it to an array. This is a lazy way to do it!

When you say sort @d you are actually saying sort { $a cmp $b } @d where $a and $b are magical vars that hold sequential pairs of elements in the sort. You use cmp to get an alphabetic sort and <=> to get a numeric one. If you want reverse the sort order you transpose the $a and $b. You can have very complex code in the block preceeding the sort because you have access to the sequential pairs in $a and $b. The default is { $a cmp $b } which is an ascending order aphabetic sort.

If you want wild, wicked and short look into grep and map in perlman:perlfunc.

cheers

tachyon

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