in reply to switch, transliteration ( tr/// ) of $_ issue

In Categorized Damian Modules, the author of Switch recommends against using it. It's a source filter, and it sometimes is confused by the code it's filtering. If you step through your script in the debugger, it might tell you what's going on.

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Re^2: switch, transliteration ( tr/// ) of $_ issue
by moritz (Cardinal) on Nov 18, 2008 at 16:25 UTC
    One should mention that newer versions of Perl do have a sane alternative, that's 
    use 5.010;
given ($foo) {
   when ($condition) { code }
   ...
}

    [download]

    (described in perlsyn)

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In Section Seekers of Perl Wisdom