import "../core/class";

import "map";

d3.set = function(array) {

var set = new d3_Set();

if (array) for (var i = 0; i < array.length; i++) set.add(array[i]);

return set;

};

function d3_Set() {}

d3_class(d3_Set, {

has: function(value) {

return d3_map_prefix + value in this;

},

add: function(value) {

this[d3_map_prefix + value] = true;

return value;

},

remove: function(value) {

value = d3_map_prefix + value;

return value in this && delete this[value];

},

values: function() {

var values = [];

this.forEach(function(value) {

values.push(value);

});

return values;

},

forEach: function(f) {

for (var value in this) {

if (value.charCodeAt(0) === d3_map_prefixCode) {

f.call(this, value.substring(1));

}

}

}

});