You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
48 lines
2.3 KiB
48 lines
2.3 KiB
"use strict"; |
|
var partition_1 = require('../operators/partition'); |
|
/** |
|
* 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 |
|
*/ |
|
function partition(predicate, thisArg) { |
|
return partition_1.partition(predicate, thisArg)(this); |
|
} |
|
exports.partition = partition; |
|
//# sourceMappingURL=partition.js.map
|