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RE: RE: Re: Search Algorithm

by tenfourty (Novice)
on Aug 10, 2000 at 19:49 UTC ( #27310=note: print w/ replies, xml ) Need Help??


in reply to RE: Re: Search Algorithm
in thread Search Algorithm

Thanks to you all for your replies, this was the first time I had posted to this list and I'm amazed at the fast response.

I will typically be searching for around 200 keywords in up to 2000 files, I need to output in my log the name of the file, the number of occurences of keywords and then for each occurence of the keyword I need to print that line and the line number.

I think that you are right that a regexp is not the best way to search a line and that for each line I should check for the occurence of each word in a hash, my search should not be case sensitive as well, are the keys in a hash case sensitive, and if so how do I get around this?


Comment on RE: RE: Re: Search Algorithm
RE: RE: RE: Re: Search Algorithm
by chromatic (Archbishop) on Aug 10, 2000 at 20:53 UTC
    Keys in a hash are case sensitive, but nothing says you have to store them in a particular case. Pseudo-workable snippet follows:
    foreach (@words) { $word_idx{lc($_)} = $position; }
    The important magic is in lc. You'll have to use lc when you pull values out of the hash, too, or use a tied hash that does this for you.

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