RX-OS // v2.0RxJS NINJA

Creation · 生成

0/8

Creating Observables from values, collections, timers, and Promises.

Transformation · 変換

0/23

Transforming stream values: map, scan, pairwise, batching.

Filtering · 選別

0/28

Selecting values by predicate, limiting by count and time.

Flattening · 平坦化

0/16

Higher-order Observables: switchMap, mergeMap, concatMap, exhaustMap.

Combination · 結合

0/19

Combining several streams into one.

Errors & Utility · エラー

0/19

Error handling and utility operators.

Multicasting · 共有

0/9

One source, many subscribers.

Reference · 72

mapTo

mapTo

Deprecated

Replaces any value with a single constant.

Signature

mapTo(value: R): OperatorFunction

What it does

Ignores the input value and emits the same constant for every next.

When to use

Supporting legacy code. In new code use map(() => value) to avoid depending on a deprecated API.

Deprecated API

Marked deprecated in RxJS 7. In new code, use map(() => value).

See also

map

script.ts // TypeScript

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