diff options
Diffstat (limited to 'node_modules/rxjs/src/internal/operators/distinctUntilKeyChanged.ts')
| -rw-r--r-- | node_modules/rxjs/src/internal/operators/distinctUntilKeyChanged.ts | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/node_modules/rxjs/src/internal/operators/distinctUntilKeyChanged.ts b/node_modules/rxjs/src/internal/operators/distinctUntilKeyChanged.ts deleted file mode 100644 index b7c4593..0000000 --- a/node_modules/rxjs/src/internal/operators/distinctUntilKeyChanged.ts +++ /dev/null @@ -1,75 +0,0 @@ -import { distinctUntilChanged } from './distinctUntilChanged'; -import { MonoTypeOperatorFunction } from '../types'; - -export function distinctUntilKeyChanged<T>(key: keyof T): MonoTypeOperatorFunction<T>; -export function distinctUntilKeyChanged<T, K extends keyof T>(key: K, compare: (x: T[K], y: T[K]) => boolean): MonoTypeOperatorFunction<T>; - -/** - * Returns an Observable that emits all items emitted by the source Observable that - * are distinct by comparison from the previous item, using a property accessed by - * using the key provided to check if the two items are distinct. - * - * If a comparator function is provided, then it will be called for each item to - * test for whether that value should be emitted or not. - * - * If a comparator function is not provided, an equality check is used by default. - * - * ## Examples - * - * An example comparing the name of persons - * - * ```ts - * import { of, distinctUntilKeyChanged } from 'rxjs'; - * - * of( - * { age: 4, name: 'Foo' }, - * { age: 7, name: 'Bar' }, - * { age: 5, name: 'Foo' }, - * { age: 6, name: 'Foo' } - * ).pipe( - * distinctUntilKeyChanged('name') - * ) - * .subscribe(x => console.log(x)); - * - * // displays: - * // { age: 4, name: 'Foo' } - * // { age: 7, name: 'Bar' } - * // { age: 5, name: 'Foo' } - * ``` - * - * An example comparing the first letters of the name - * - * ```ts - * import { of, distinctUntilKeyChanged } from 'rxjs'; - * - * of( - * { age: 4, name: 'Foo1' }, - * { age: 7, name: 'Bar' }, - * { age: 5, name: 'Foo2' }, - * { age: 6, name: 'Foo3' } - * ).pipe( - * distinctUntilKeyChanged('name', (x, y) => x.substring(0, 3) === y.substring(0, 3)) - * ) - * .subscribe(x => console.log(x)); - * - * // displays: - * // { age: 4, name: 'Foo1' } - * // { age: 7, name: 'Bar' } - * // { age: 5, name: 'Foo2' } - * ``` - * - * @see {@link distinct} - * @see {@link distinctUntilChanged} - * - * @param key String key for object property lookup on each item. - * @param compare Optional comparison function called to test if an item is distinct - * from the previous item in the source. - * @return A function that returns an Observable that emits items from the source - * Observable with distinct values based on the key specified. - */ -export function distinctUntilKeyChanged<T, K extends keyof T>( - key: K, - compare?: (x: T[K], y: T[K]) => boolean -): MonoTypeOperatorFunction<T> { - return distinctUntilChanged((x: T, y: T) => (compare ? compare(x[key], y[key]) : x[key] === y[key])); -} |
