Reactive-Extensions/RxJS

View on GitHub
doc/api/core/operators/skiplast.md

Summary

Maintainability
Test Coverage
# This is RxJS v 4. [Find the latest version here](https://github.com/reactivex/rxjs)
### `Rx.Observable.prototype.skipLast(count)`
[Ⓢ](https://github.com/Reactive-Extensions/RxJS/blob/master/src/core/linq/observable/skiplast.js "View in source")
 
Bypasses a specified number of elements at the end of an observable sequence.
 
This operator accumulates a queue with a length enough to store the first `count` elements. As more elements are received, elements are taken from the front of the queue and produced on the result sequence. This causes elements to be delayed.
 
#### Arguments
1. `count` *(`Number`)*: Number of elements to bypass at the end of the source sequence.
 
#### Returns
*(`Observable`)*: An observable sequence containing the source sequence elements except for the bypassed ones at the end.
 
#### Example
```js
var source = Rx.Observable.range(0, 5)
.skipLast(3);
 
var subscription = source.subscribe(
function (x) {
console.log('Next: ' + x);
},
function (err) {
console.log('Error: ' + err);
},
function () {
console.log('Completed');
});
 
// => Next: 0
// => Next: 1
// => Completed
```
 
### Location
 
File:
- [`/src/core/linq/observable/skiplast.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/src/core/linq/observable/skiplast.js)
 
Dist:
- [`rx.all.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.all.js)
- [`rx.all.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.all.compat.js)
- [`rx.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.js)
- [`rx.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.compat.js)
- [`rx.lite.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.js)
- [`rx.lite.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.compat.js)
 
Prerequisites:
- None
 
NPM Packages:
- [`rx`](https://www.npmjs.org/package/rx)
 
NuGet Packages:
- [`RxJS-All`](http://www.nuget.org/packages/RxJS-All/)
- [`RxJS-Main`](http://www.nuget.org/packages/RxJS-Main/)
- [`RxJS-Lite`](http://www.nuget.org/packages/RxJS-Lite/)
 
Unit Tests:
- [`/tests/observable/skiplast.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/tests/observable/skiplast.js)