08-27-周三_17-09-29

node_modules/d3/src/arrays/set.js

@@ -0,0 +1,27 @@
+import "../core/class";
+import "map";
+
+d3.set = function(array) {
+  var set = new d3_Set;
+  if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
+  return set;
+};
+
+function d3_Set() {
+  this._ = Object.create(null);
+}
+
+d3_class(d3_Set, {
+  has: d3_map_has,
+  add: function(key) {
+    this._[d3_map_escape(key += "")] = true;
+    return key;
+  },
+  remove: d3_map_remove,
+  values: d3_map_keys,
+  size: d3_map_size,
+  empty: d3_map_empty,
+  forEach: function(f) {
+    for (var key in this._) f.call(this, d3_map_unescape(key));
+  }
+});