in reply to Kindly let me know what exactly && does in Perl

I thought that the && would sort of "short circuit"

It does, but it is a logical operator hence this:


## The left side is false, so it short circuits 
## and the residual value assigned is 0
my $x = $zero && $two;

## The left side is true, so it checks the right side which is false; 
## so the residual value comes from the right side and is 0
my $y = $three && $zero;

## The left side is true, so it checks the right side which is also tr
+ue; 
## so the residual value comes from the right side and is 3
my $z = $two && $three;

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