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Re: Looking for N/A twice

by Cody Pendant (Prior)
on Oct 22, 2007 at 04:59 UTC ( [id://646362]=note: print w/replies, xml ) Need Help??


in reply to Looking for N/A twice

Off-topic, but I realised that you could search for two or more occurrences of a substring in a string with nested index() calls like this: 
$str = 'N/A N/A blah blah blah SATA N/A blah blah N/A';

$substr = 'N/A';

if (index($str,$substr, index($str,$substr)+1 ) ) {
print "two or more occurrences of '$substr' in '$str'"
}

[download]
which is probably way faster than any RegEx method.

Nobody says perl looks like line-noise any more
kids today don't know what line-noise IS ...

Replies are listed 'Best First'.
Re^2: Looking for N/A twice
by ambrus (Abbot) on Oct 22, 2007 at 09:07 UTC

    No way. index($str,$substr, index($str,$substr)+1 practically always returns true, even if $str has $substr only once or not at all. I don't think it's way faster than regexen either.

[reply]
[d/l]

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