in reply to Re: Faster push and shift
in thread Faster push and shift

What’s the difference here, BrowserUK?   (Really, that’s quite the sincere question.)   Kindly enlighten us all:   What is the key change from the OP that will make it faster, and how much faster do you predict it now will be?   ... And under what governing assumptions?

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Re^3: Faster push and shift
by BrowserUk (Patriarch) on Feb 16, 2012 at 14:49 UTC
    how much faster do you predict it now will be?

    Doing it the OPs way on 1 million records takes 3.3 seconds:

    c:\test>junk91 junk.dat
3.25699996948242
([1, 3, 4, 4, 1, 3, 2], [4, 4, 4, 4, 4, 4, 4])

    [download]

    Same file doing it my way produces the same results in 1/2 a millisecond:

    c:\test>junk91-2 junk.dat
0.000479936599731445
([1, 3, 4, 4, 1, 3, 2], [4, 4, 4, 4, 4, 4, 4])

    [download]

    I make that 6,600 times faster. The OPs mileage my vary.

    With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.

    The start of some sanity?
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