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Re^2: finding the position of a particular character in a string

by BrowserUk (Pope)
on Oct 06, 2011 at 04:45 UTC ( #929931=note: print w/replies, xml ) Need Help??


in reply to Re: finding the position of a particular character in a string
in thread finding the position of a particular character in a string

Searching twice is expensive and unnecessary:

$a="THE FOOD IS DELICIOUS";; $p=0; @p=(); push @p, $p-1 while $p = 1+index $a, 'O', $p; print @p;; 5 6 18

Or:

$a="THE FOOD IS DELICIOUS";; @p=(); push @p, $-[0] while $a =~ m[O]g;; print @p;; 5 6 18

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.

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