Yeah, bad idea.

Consider the two proposed automatic mys in the following code. It avoids an obvious compile time fault ($line), while causing a silent run time fault ($indux).

use strict;
use warnings;

my $index = 0;
while ($line = <>)
{
  frobnicate($indux++, $line);
}

[download]

Appended Re: LanX's comment

If only applying the my to assignments initializations, then consider this code with the same issues:

use strict;
use warnings;

my $faultsInARow = 0;
while ($line = <>)
{
  if (frobnicate($line))
  {
    $faultsInaRow = 0;  #Initializing a new variable by mistake.
  }else{
    $faultsInARow ++;
  }
}

[download]

In reply to Re^3: Opinion: where Perl5 wasn't attractive for me by SuicideJunkie
in thread Opinion: where Perl5 wasn't attractive for me by rsFalse

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