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Re^2: Quicksort problem

by JediMasterT (Sexton)
on Nov 22, 2011 at 13:49 UTC ( #939456=note: print w/ replies, xml ) Need Help??


in reply to Re: Quicksort problem
in thread Quicksort problem

how does the // part work?


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Re^3: Quicksort problem
by Limbic~Region (Chancellor) on Nov 22, 2011 at 14:12 UTC
    JediMasterT,
    See perlop. The // operator essentially is a special or operator where it is testing the left hand side for definedness. I am pretty sure this became available in perl 5.10 four years ago but you can check perlhist and perldelta if you want to be sure.

    Cheers - L~R

Re^3: Quicksort problem
by choroba (Canon) on Nov 22, 2011 at 14:13 UTC
    If the left part is not defined, the right is returned, otherwise the left one is. See perlop.

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