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About hash table lookup. In theory, if you have infinite ammount of memory, you can approach O(1) time. As I understand all really implemented hash algorithms with finite memory will take, strictly speaking, O(n) time. There is an example of unsuccessful order of data that will make Perl's implementation of hashes to take O(n) for searching. In practice you'll hardly will be much worse than O(1).

In reply to RE: Shift, Pop, Unshift and Push with Impunity! by Anonymous Monk
in thread Shift, Pop, Unshift and Push with Impunity! by lhoward

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    [choroba]: but gurus say they in fact happen left to right, but we understand them wrongly
    [marioroy]: bad gurus :)
    [choroba]: also, &> redirects both at the same time
    [marioroy]: erix are you using csh
    Discipulus uh the link was for cmd.exe the bash one
    [marioroy]: If yes, for redirection to work, one might do the following
    [marioroy]: `bash -c "clang --version 2>/dev/null"`
    [choroba]: Sane people don't use csh
    [marioroy]: the 1>&2 will work, not shown
    [marioroy]: sorry, did not know which if cmd.exe or unix (bash)

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