hey great! you guys must have posted just after me heh... this place is really quick in giving replies eh? i'm liking it already

anyway, glad i was on the right track there... would this be efficient? or is there another more efficient method? i ask this because (like i mentioned in my 2nd post) the input file would be very large (> 100MB) and to filter the lines into the different files, i'd need to perform several conditional tests which i'm afraid may slow down the program... this is how my code would be like
while(<IN>) { if(substr($_, 259, 1) eq "B") { print B $_; } else if (substr($_, 259, 1) eq "T") { print T $_; } else if () { # and so on for at least 10 lines!... } }

In reply to Re: substring exists at particular postion? by redemption
in thread substring exists at particular postion? by redemption

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