Optimize difference

2026-05-16 05:49:16 +02:00 · 2013-01-08 15:33:29 -05:00
parent 2f8454e50e
commit 4347b134de
1 changed files with 7 additions and 5 deletions
@@ -107,19 +107,21 @@ iD.Graph.prototype = {
    },

    difference: function (graph) {
-        var result = [];
+        var result = [], entity, id;

-        _.each(this.entities, function(entity, id) {
+        for (id in this.entities) {
+            entity = this.entities[id];
            if (entity !== graph.entities[id]) {
                result.push(id);
            }
-        });
+        }

-        _.each(graph.entities, function(entity, id) {
+        for (id in graph.entities) {
+            entity = graph.entities[id];
            if (entity && !this.entities.hasOwnProperty(id)) {
                result.push(id);
            }
-        }, this);
+        }

        return result.sort();
    },