$l_ref = \(1,2,3,4);

##</code><code>##

# perl -le '$l_ref = \(1,2,3,4); print $l_ref'
SCALAR(0x8150310)
# perl -le '$l_ref = \(1,2,3,4); print $$l_ref'
4

##</code><code>##

$l_ref = [ 1,2,3,4 ];