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.

ReferencetoArray

Reference · 115

toArray

toArray

Collects all values into an array and emits it on complete.

Signature

toArray(): OperatorFunction

What it does

Buffers the whole stream until it completes. After complete, it sends one array with all the values.

When to use

Turning a finite Observable list into an array, grouping results, testing a sequence.

Gotcha

On an infinite stream, toArray never emits and holds onto memory.

See also

reduce, bufferCount

script.ts // TypeScript

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