refcount.md

This is RxJS v 4. Find the latest version here

ConnectableObservable.prototype.refCount()

Ⓢ

Returns an observable sequence that stays connected to the source as long as there is at least one subscription to the observable sequence.

Returns

(Observable): An observable sequence that stays connected to the source as long as there is at least one subscription to the observable sequence.

Example

var interval = Rx.Observable.interval(1000);

var source = interval
    .take(2)
    .doAction(function (x) {
        console.log('Side effect');
    });

var published = source.publish().refCount();

published.subscribe(createObserver('SourceA'));
published.subscribe(createObserver('SourceB'));

function createObserver(tag) {
    return Rx.Observer.create(
        function (x) {
            console.log('Next: ' + tag + x);
        },
        function (err) {
            console.log('Error: ' + err);
        },
        function () {
            console.log('Completed');
        });
}

// => Side effect
// => Next: SourceA0
// => Next: SourceB0
// => Side effect
// => Next: SourceA1
// => Next: SourceB1
// => Completed
// => Completed

Location

File:

• /src/core/linq/observable/connectableobservable.js

Dist:

• rx.all.js
• rx.all.compat.js
• rx.binding.js
• rx.lite.js
• rx.lite.compat.js

Prerequisites:

• If using rx.binding.js
  • rx.js | rx.compat.js | rx.lite.js | rx.lite.compat.js

NPM Packages:

• rx

NuGet Packages:

• RxJS-Binding

Unit Tests:

• /tests/observable/connectableobservable.js