in reply to Re: how can I speed up this perl??
in thread how can I speed up this perl??

Thanks Abigail-II, but i'm new and dont get how this.. where do I define each pair e.g. $counts == aa. ? how does this counter know what to look for?

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Re: how can I speed up this perl??
by Abigail-II (Bishop) on Nov 24, 2003 at 11:18 UTC
    It's a hash. If you encounter "aa", it'll add 1 to its "aa" entry. If you encounter "cg", it'll add 1 to its "cg" entry, etc.

    Abigail

[reply]
      so how do I access the frequency of each pair using your code?
[reply]

        You access the data by supplying the hash key. so print $counts{tt}; would print the frequency of tt occurences.

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[d/l]
[select]
        Do you know what a hash is?

        Abigail

[reply]

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