762   var Collection = Backbone.Collection = function(models, options) {  argument
769     if (models) this.reset(models, _.extend({silent: true}, options));
817     add: function(models, options) {  argument
818       return this.set(models, _.extend({merge: false}, options, addOptions));
822     remove: function(models, options) {  argument
824       var singular = !_.isArray(models);
825       models = singular ? [models] : models.slice();
826       var removed = this._removeModels(models, options);
838     set: function(models, options) {  argument
839       if (models == null) return;
842       if (options.parse && !this._isModel(models)) {
843         models = this.parse(models, options) || [];
846       var singular = !_.isArray(models);
847       models = singular ? [models] : models.slice();
871       for (i = 0; i < models.length; i++) {
872         model = models[i];
889           models[i] = existing;
893           model = models[i] = this._prepareModel(model, options);
906           model = this.models[i];
916         orderChanged = this.length !== set.length || _.some(this.models, function(m, index) {
919         this.models.length = 0;
920         splice(this.models, set, 0);
921         this.length = this.models.length;
924         splice(this.models, toAdd, at == null ? this.length : at);
925         this.length = this.models.length;
950       return singular ? models[0] : models;
957     reset: function(models, options) {  argument
959       for (var i = 0; i < this.models.length; i++) {
960         this._removeReference(this.models[i], options);
962       options.previousModels = this.models;
964       models = this.add(models, _.extend({silent: true}, options));
966       return models;
993       return slice.apply(this.models, arguments);
1013       return this.models[index];
1041         this.models = this.sortBy(comparator);
1043         this.models.sort(comparator);
1098       return new this.constructor(this.models, {
1113       this.models = [];
1133     _removeModels: function(models, options) {  argument
1135       for (var i = 0; i < models.length; i++) {
1136         var model = this.get(models[i]);
1140         this.models.splice(index, 1);