perlpal has asked for the wisdom of the Perl Monks concerning the following question:

Hi PerlMonks, Seeking you assistance for the following :

First some wisdom, Use strict warnings and diagnostics or die,

• Why it's stupid to `use a variable as a variable name` - part 1
• Why it's stupid to `use a variable as a variable name` - part 2
• Why it's stupid to `use a variable as a variable name` - part 3

Now to your code, oops, more wisdom :) read perlnumber

warn 'test' ne 0;
warn 'test' == 0;
warn 'test' != 0;
warn 'test' + 0;
__END__
1 at - line 1.
1 at - line 2.
Warning: something's wrong at - line 3.
0 at - line 4.
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A string, used in numeric operation, is converted to a number, most often 0. You want to use ne. See also defined and length.