code: function ( data ) {
          var dlen = data.length
              ;
          // get random indexes for slicing data, obviously the slice length should be >= 52
          return data.slice( rand( 0, dlen >>> 2 ), rand( dlen >>> 1, dlen ) );
      }
docs: /*
  Example of mimicking the creation and shuffling of a deck of 52 cards,
  using a full permutation within a range of 52 values, FP(52).