Advance technique : hash slice

#hashSlice.pl


%hash =(
  k1 => "v1",
  k2 => "v2",
  k3 => "v3",
  k4 => "v4",
  
);


$rhash =\%hash;
print "@$rhash{k1,k3}"; #hash slice implementation ,print out ->"v1 v3"
@sliceResult = @$rhash{k1,k3};
print @sliceResult; #Display:v1v3