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Re: <STDIN> not initializing $_

by wade (Pilgrim)
on Apr 30, 2008 at 23:22 UTC ( #683812=note: print w/replies, xml ) Need Help??

in reply to <STDIN> not initializing $_

Yeah, and since $_ can get silently overwritten (especially as you add code and forget that you were counting on $_) I really hate to use it. Instead, I assign everything to my own variables:

use strict; use warnings; while (1) { my $foo = <STDIN>; $foo =~ m/./ and print "success.\n"; # ... (more code) ... }

I'd also tend not to use a while(1) loop but that's a whole other Oprah.


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Re^2: <STDIN> not initializing $_
by oko1 (Deacon) on May 01, 2008 at 00:30 UTC
    > Yeah, and since $_ can get silently overwritten [...]

    Just about as silently as every other variable in Perl. No matter what your own preferences may be, '$_' is an important and integral part of Perl - and there's no reason to give misleading advice to someone who is trying to learn about it.

    > [...] I really hate to use it.

    Say 'goodbye' to grep and map, then. In fact, bid 'good night' to half the functionality of most Perl functions.

    Human history becomes more and more a race between education and catastrophe. -- HG Wells
      I'm just saying that I like to assign values to variables explicitly when possible. I think it's clearer and a little less error-prone but that's just me.

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