abkfenris / sugarloaf

      // Reduces the specified selected or deselected records.

      // This function is only used when the cardinality is greater than 1.

      function updateMany(filterOne, added, removed) {

        if (filterOne === one || resetNeeded) return;

        var i,

            k,

            n,

            g;

        // Add the added values.

        for (i = 0, n = added.length; i < n; ++i) {

          if (!(filters[k = added[i]] & zero)) {

            g = groups[groupIndex[k]];

            g.value = reduceAdd(g.value, data[k]);

          }

        }

        // Remove the removed values.

        for (i = 0, n = removed.length; i < n; ++i) {

          if ((filters[k = removed[i]] & zero) === filterOne) {

            g = groups[groupIndex[k]];

            g.value = reduceRemove(g.value, data[k]);

          }

        }

      }

      // Reduces the specified selected or deselected records.

      // This function is only used when the cardinality is 1.

      // Reduces the specified selected or deselected records.

      // This function is only used when the cardinality is 1.

      function updateOne(filterOne, added, removed) {

        if (filterOne === one || resetNeeded) return;

        var i,

            k,

            n,

            g = groups[0];

        // Add the added values.

        for (i = 0, n = added.length; i < n; ++i) {

          if (!(filters[k = added[i]] & zero)) {

            g.value = reduceAdd(g.value, data[k]);

          }

        }

        // Remove the removed values.

        for (i = 0, n = removed.length; i < n; ++i) {

          if ((filters[k = removed[i]] & zero) === filterOne) {

            g.value = reduceRemove(g.value, data[k]);

          }

        }

      }

      // Recomputes the group reduce values from scratch.

      // This function is only used when the cardinality is greater than 1.