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Re: Foreach loop

by Corion (Pope)
on Sep 27, 2013 at 10:08 UTC ( #1055954=note: print w/replies, xml ) Need Help??


in reply to Foreach loop

With the code and data you've shown, I cannot reproduce your problem:

#!perl -w use strict; my $key="5 10 14 16 17 20 25 26 38 1 42 4 +7 54"; my $substr = " 1 "; my @newarray= $key; foreach $key ( @newarray ) { if (index($key, $substr) != -1) { print "\nExist (substr)" }; if ($key =~ /\Q$substr\E/) { print "\nExist (RE)" }; if ($key =~ /\s+1\s+/) { print "\nExist (whitespace)" }; } __END__ >perl -w tmp.pl Exist (substr) Exist (RE) Exist (whitespace)

Maybe your data in $key really has tabs in it, but you are searching for blanks?

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[choroba]: No, if there are no threads, then the user wants to use MCE. If there are threads, the user can choose.
[1nickt]: choroba Understood. I'm wondering about the logic in a cpanfile. If the perl doesn't support threads, it's easy: require MCE. If the perl does support threads, as you say the user has a choice, so require both? Or, assume that irrespective of the choide
[1nickt]: ... choice, the threaded-perl user *probably* wants to use threads, therefore only require threads and leave MCE out, allowing the user to manually install if desired?
[choroba]: just require any of MCE and threads. Not sure if that's possible in the cpanfile, but should be possible early in the Makefile
[1nickt]: The app expects threads as default anyway, right?
[choroba]: that's true
[1nickt]: expects threads *to be* the default
[1nickt]: I think cpanfile can handle the logic. testing now.

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