https://github.com/jayrbolton/flyd-zip
Zip function for flyd streams
https://github.com/jayrbolton/flyd-zip
Last synced: 2 months ago
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Zip function for flyd streams
- Host: GitHub
- URL: https://github.com/jayrbolton/flyd-zip
- Owner: jayrbolton
- Created: 2016-06-06T01:39:23.000Z (almost 9 years ago)
- Default Branch: master
- Last Pushed: 2016-06-06T02:13:05.000Z (almost 9 years ago)
- Last Synced: 2025-02-15T22:31:53.007Z (3 months ago)
- Language: JavaScript
- Size: 341 KB
- Stars: 0
- Watchers: 2
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
Creates a stream with values from any number of source streams lined up with
each other. For example if you have two streams with values [1, 2, 3] and [4,
5, 6, 7], the resulting stream will emit [1, 4], [2, 5], and [3, 6]. The
resulting stream will emit the next value only when it has at least one value
from each source.
```js
const s1 = flyd.stream()
const s2 = flyd.stream()
const zipped = zip([s1, s2])
s1(1)
s2(2)
zipped() // [1, 2]
s2(3)
zipped() // [1, 2] -- s1 still has old value so zipped does not change
s1(4)
zipped() // [4, 3]
```
Zip is not like lift, because lift will give you a pair for every new value. For example:
```js
const s1 = flyd.stream()
const s2 = flyd.stream()
const lifted = lift((v1, v2) => [v1, v2], s1, s2)
s1(1)
s2(2)
lifted() // [1,2]
s2(3) // [1,3]
```