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Re^2: Data extraction from text file

by usadhikari (Initiate)
on Aug 09, 2011 at 09:49 UTC ( #919447=note: print w/replies, xml ) Need Help??


in reply to Re: Data extraction from text file
in thread Data extraction from text file

Actually i m trying to extract data from a text file.. but i m not able to do so.. kindly help me :(

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Re^3: Data extraction from text file
by elef (Friar) on Aug 09, 2011 at 11:17 UTC
    I'm sure your teacher gave you some pointers. Start with those, then have a look at what your textbook has to say on the matter.
      the best thing to do in such scenario would be to use a text file formatting software like IntelliGet or Monarch

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[Lady_Aleena]: Why does grep(/.*$in.*/, @my_modules) work but grep { $_ =~ /.*$in.*/; $_ } @my_modules not work? What did I do wrong in the second?
[tobyink]: Why are you returning $_ n your grep block? You should return a boolean.
[tobyink]: *in your grep block
[tobyink]: You can use grep { $_ =~ /.*$in.*/; } @my_modules but why not stick to grep(/.*$in.*/, @my_modules)? (The latter is faster.)
[shmem]: Lady_Aleena, in the first example grep evaluates the result from grep and if true, returns $_. In the second, it always returns $_
[shmem]: ..the result from the pattern match
[Lady_Aleena]: tobyink, I did after I failed to get the BLOCK to work. I can't seem to get my brain around grep BLOCK, though I'm okay with grep EXPR.

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