|Think about Loose Coupling|
Re^3: call subroutines via hashby swkronenfeld (Hermit)
|on Jan 04, 2006 at 22:40 UTC||Need Help??|
The above note by Errto explained why \@data works. As s?he said, it creates a reference to the array @data, and stores it in the scalar.
Since you said you're confused by how both methods work, let me clear up eric256's method.
$array_ref = [ ]; creates a new, empty array, and returns the reference to it. In this case, we assign it to $array_ref.
$array2_ref = [1, 2, 3, 4]; creates a new array and initializes it with the values supplied. It returns the reference, which we once again store.
$radius_ref = [@data] will create a new array initialized with the contents of @data.
There's a really important distinction between using [@data] and \@data. They both create array references, but the method with the brackets creates a new array, while the slash method references your existing array. The example below should clear up any confusion you have.
Hope that helped.