Re: The $a have any special meanning ?

"sonet" <sonet.all@xxxxxxxxxxxxx> wrote in message news:f64n0b$d1h$1@xxxxxxxxxxxxxxxxxxxx
1.pl
----------------------
use strict;
$a=1;

the perl does not return error (Global symbol "$a" requires explicit package name...)

but

2.pl
----------------------
use strict;
$c=1;

the perl return error (Global symbol "$c" requires explicit package name...)

$a and $b are special reserved variables used in sorting. perldoc -f sort

You can use them, but it is not good practice.

In fact single letter variable names are rarely good practice, particularly when you need to re-edit that code in a years time...

P

.

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