[PerlChina] My test case failed in this way

[Andy Chen]

Run following code, tell me your result.

#!/usr/bin/perl

my $a= "nAnQpW9mVV0TWLgbLgriCu6Tp2f2ymI7HUZfJS";
my $b= "nAnQpW9mVV0TWLgbLgriCu6Tp2f2ymI7HUZfJS";

if($a != $b)
{
    print("not equal!\n");
}
else
{
    print("equal!\n");
}

if("$a" != "$b")
{
    print("not equal!\n");
}
else
{
    print("equal!\n");
}

if(qw/$a/ != qw/$b/)
{   
    print("not equal!\n");
}   
else
{   
    print("equal!\n");
}

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