Sha256: 1eab37517d47f43802a5cb9552c1c45ca698c5e0d35b14939f49cec3b1064882
Contents?: true
Size: 1.77 KB
Versions: 49
Compression:
Stored size: 1.77 KB
Contents
"use strict";
var distinctUntilChanged_1 = require('../operators/distinctUntilChanged');
/* tslint:enable:max-line-length */
/**
* Returns an Observable that emits all items emitted by the source Observable that are distinct by comparison from the previous item.
*
* If a comparator function is provided, then it will be called for each item to test for whether or not that value should be emitted.
*
* If a comparator function is not provided, an equality check is used by default.
*
* @example <caption>A simple example with numbers</caption>
* Observable.of(1, 1, 2, 2, 2, 1, 1, 2, 3, 3, 4)
* .distinctUntilChanged()
* .subscribe(x => console.log(x)); // 1, 2, 1, 2, 3, 4
*
* @example <caption>An example using a compare function</caption>
* interface Person {
* age: number,
* name: string
* }
*
* Observable.of<Person>(
* { age: 4, name: 'Foo'},
* { age: 7, name: 'Bar'},
* { age: 5, name: 'Foo'})
* { age: 6, name: 'Foo'})
* .distinctUntilChanged((p: Person, q: Person) => p.name === q.name)
* .subscribe(x => console.log(x));
*
* // displays:
* // { age: 4, name: 'Foo' }
* // { age: 7, name: 'Bar' }
* // { age: 5, name: 'Foo' }
*
* @see {@link distinct}
* @see {@link distinctUntilKeyChanged}
*
* @param {function} [compare] Optional comparison function called to test if an item is distinct from the previous item in the source.
* @return {Observable} An Observable that emits items from the source Observable with distinct values.
* @method distinctUntilChanged
* @owner Observable
*/
function distinctUntilChanged(compare, keySelector) {
return distinctUntilChanged_1.distinctUntilChanged(compare, keySelector)(this);
}
exports.distinctUntilChanged = distinctUntilChanged;
//# sourceMappingURL=distinctUntilChanged.js.map
Version data entries
49 entries across 49 versions & 4 rubygems