Fwd: What is the value of @_4_[0], and $return_me? (see below)

[Bruce Ambraal]

OOPs! 
I meant 
Fwd: What is the value of @_$_[0], and $return_me? (see below)

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Hi 

1. (see subject)
2. Explain  lines 3 , 4
3.Why does'nt this coding return anything2

sub routine {
my @arr = (0, 'a' 1, 'b');
@_ = @arr;
my $retun_me = shift;
return( $return_me )
};


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