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 · 84

pluck

pluck

Deprecated

Pulls a nested field out of an object.

Signature

pluck(...properties: string[]): OperatorFunction

What it does

Takes a property path and emits the value at that path. If the path is missing, the result is undefined.

When to use

Supporting legacy code. In new code, map(x => x.field) types better and reads more clearly.

Deprecated API

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

See also

map

script.ts // TypeScript

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