d2-ui
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text/typescript
/// <reference path="../../observable.ts" />
module Rx {
export interface Observable<T> {
/**
* Returns the elements in an observable sequence with the maximum key value according to the specified comparer.
* @example
* var res = source.maxBy(function (x) { return x.value; });
* var res = source.maxBy(function (x) { return x.value; }, function (x, y) { return x - y;; });
* @param {Function} keySelector Key selector function.
* @param {Function} [comparer] Comparer used to compare key values.
* @returns {Observable} An observable sequence containing a list of zero or more elements that have a maximum key value.
*/
maxBy<TKey>(keySelector: (item: T) => TKey, comparer: _Comparer<TKey, number>): Observable<T>;
/**
* Returns the elements in an observable sequence with the maximum key value according to the specified comparer.
* @example
* var res = source.maxBy(function (x) { return x.value; });
* var res = source.maxBy(function (x) { return x.value; }, function (x, y) { return x - y;; });
* @param {Function} keySelector Key selector function.
* @param {Function} [comparer] Comparer used to compare key values.
* @returns {Observable} An observable sequence containing a list of zero or more elements that have a maximum key value.
*/
maxBy(keySelector: (item: T) => number): Observable<T>;
}
}
(function () {
var o : Rx.Observable<{value:number}>;
var a : Rx.Observable<{value: string}>;
o = o.maxBy(x => x.value);
a = a.maxBy(x => x.value, (x, y) => x.length - y.length);
});