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Contents
/**
* Groups the elements of an observable sequence according to a specified key selector function and comparer and selects the resulting elements by using a specified function.
*
* @example
* var res = observable.groupBy(function (x) { return x.id; });
* 2 - observable.groupBy(function (x) { return x.id; }), function (x) { return x.name; });
* 3 - observable.groupBy(function (x) { return x.id; }), function (x) { return x.name; }, function (x) { return x.toString(); });
* @param {Function} keySelector A function to extract the key for each element.
* @param {Function} [elementSelector] A function to map each source element to an element in an observable group.
* @param {Function} [comparer] Used to determine whether the objects are equal.
* @returns {Observable} A sequence of observable groups, each of which corresponds to a unique key value, containing all elements that share that same key value.
*/
observableProto.groupBy = function (keySelector, elementSelector, comparer) {
return this.groupByUntil(keySelector, elementSelector, observableNever, comparer);
};
Version data entries
14 entries across 7 versions & 1 rubygems