@reactivex/rxjs

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class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">import { not } from '../util/not'; import { filter } from './filter'; /** * Splits the source Observable into two, one with values that satisfy a * predicate, and another with values that don't satisfy the predicate. * * <span class="informal">It's like {@link filter}, but returns two Observables: * one like the output of {@link filter}, and the other with values that did not * pass the condition.</span> * * <img src="./img/partition.png" width="100%"> * * `partition` outputs an array with two Observables that partition the values * from the source Observable through the given `predicate` function. The first * Observable in that array emits source values for which the predicate argument * returns true. The second Observable emits source values for which the * predicate returns false. The first behaves like {@link filter} and the second * behaves like {@link filter} with the predicate negated. * * @example <caption>Partition click events into those on DIV elements and those elsewhere</caption> * var clicks = Rx.Observable.fromEvent(document, 'click'); * var parts = clicks.partition(ev => ev.target.tagName === 'DIV'); * var clicksOnDivs = parts[0]; * var clicksElsewhere = parts[1]; * clicksOnDivs.subscribe(x => console.log('DIV clicked: ', x)); * clicksElsewhere.subscribe(x => console.log('Other clicked: ', x)); * * @see {@link filter} * * @param {function(value: T, index: number): boolean} predicate A function that * evaluates each value emitted by the source Observable. If it returns `true`, * the value is emitted on the first Observable in the returned array, if * `false` the value is emitted on the second Observable in the array. The * `index` parameter is the number `i` for the i-th source emission that has * happened since the subscription, starting from the number `0`. * @param {any} [thisArg] An optional argument to determine the value of `this` * in the `predicate` function. * @return {[Observable<T>, Observable<T>]} An array with two Observables: one * with values that passed the predicate, and another with values that did not * pass the predicate. * @method partition * @owner Observable */ export function partition(predicate, thisArg) { return [ filter.call(this, predicate), filter.call(this, not(predicate, thisArg)) ]; } //# sourceMappingURL=partition.js.map</code></pre> </div> <footer class="footer"> Generated by <a href="https://esdoc.org">ESDoc<span data-ice="esdocVersion">(0.4.8)</span></a> </footer> <script src="script/search_index.js"></script> <script src="script/search.js"></script> <script src="script/pretty-print.js"></script> <script src="script/inherited-summary.js"></script> <script src="script/test-summary.js"></script> <script src="script/inner-link.js"></script> <script src="script/patch-for-local.js"></script> </body> </html>