On 10/04/2013 16:45, Bob goolsby wrote:
G'Mornin' Kavita --
Before you go off on a goose chase, how do you know that substr() is going
to be a problem for you? Have you bench-marked it? If your file is as
large as you say, I strongly suspect that your bottleneck is going to be
I/O and any differences between unpack() and substr() will be lost in the
noise band below 1%.
Hint:
Try adding
return "";
as the first statement of `extractFieldValue` (i.e. so that it does
nothing and returns a null string) then run your program and see how
long it takes just doing the IO.
Rob
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