in reply to Re^4: Possible useless use of map
in thread Possible useless use of map

Who said return? Besides, the memory penalty wasnt a memory leak, just memory that was allocated needlessly, then released.

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Re^6: Possible useless use of map
by Marshall (Canon) on Mar 30, 2010 at 09:49 UTC
    Once Perl has some memory, it never gives it back to the OS. Perl can reuse its memory and it is pretty smart about that. Writing to and using more memory is a penalty as that takes CPU Mips even if it doesn't take disk space.