The first "$i" in the for loop causes the warning. "$i" at that point is a statement that does nothing and the resultant value is not used by anyone (normally an assignment occurs there) and hence the "useless use" warning.

This program will generate the same warning: 

#!/usr/bin/perl
use strict;
use warnings;
my $y = 9;
$y;
exit 0;

[download]
Change the for loop to 
    for(;$i<$Size;$i++) {

[download]
and the warning will go away.

In reply to Re: useless use of private variable in void context by gmargo
in thread Useless use of private variable in void context by okarmi

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