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Re: New to perl and regex

by NetWallah (Abbot)
on Nov 19, 2012 at 02:17 UTC ( #1004469=note: print w/replies, xml ) Need Help??


in reply to New to perl and regex

Welcome to the Monastery !

You have other problems with unmatched "[" and the strange "$" as a regex modifier.

I have fixed that - and modified your target selelection slightly by adding a trailing "$".

use strict; use warnings; print "Enter a string: "; while(<>) { my $line = $_; last if ($_ =~ /^\s*[Q|q]{1,1}[U|u]{1,1}[I|i]{1,1}[T|t]{1,1}\s*$/); #Easier to match /quit/i next if ($_ =~ /^$/ or $_ =~ /^\s+$/); if($line =~ /\s*([a-zA-Z]+\s*)+\s*(-?\d\d?)\s*$/) { print $_; } }
Now - if you supply a string of "this that other 555" it will NOT match, because it matches 2 digits, but fails on the trailing "$" in the regex.

             "By three methods we may learn wisdom: First, by reflection, which is noblest; Second, by imitation, which is easiest; and third by experience, which is the bitterest."           -Confucius

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[stevieb]: yeah, so the wiringPi library appears to be missing/injecting incorrect defined variables into I2C calls, and it's all over the map. I'm going to have to revisit and use something else, write something else, or scrutinize the code and fix

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