https://github.com/onface/delayeach
delay each `delayEach(arr, iterateFn(item, index, next, finish), finishFn)`
https://github.com/onface/delayeach
Last synced: 25 days ago
JSON representation
delay each `delayEach(arr, iterateFn(item, index, next, finish), finishFn)`
- Host: GitHub
- URL: https://github.com/onface/delayeach
- Owner: onface
- Created: 2017-08-08T09:36:59.000Z (almost 8 years ago)
- Default Branch: master
- Last Pushed: 2017-10-17T09:43:25.000Z (over 7 years ago)
- Last Synced: 2025-02-17T09:43:14.330Z (4 months ago)
- Language: JavaScript
- Homepage:
- Size: 4.88 KB
- Stars: 0
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# delay each
> delay each `delayEach(arr, iterateFn(item, index, next, finish), finishFn)`
## install
```shell
npm install delayeach
```
```js
var delayEach = require('delayeach')
var fs = require('fs')
var files = [
'./example/a.txt',
'./example/b.txt',
'./example/c.txt'
]
var contents = []
delayEach(
files,
function handle(file, index, next, finish) {
fs.readFile(file, function (err, data) {
var text
if (err) {
text = err.message
}
else {
text = data.toString()
}
contents[index] = text
if (err) {
finish()
}
else {
next()
}
})
},
function finish () {
console.log('finish')
console.log(JSON.stringify(contents))
}
)
/**
* file: a.txt b.txt c.txt
* ["aaa\n","bbb\n","ccc\n"]
*/
/**
* file: a.txt c.txt
* ["aaa\n","ENOENT: no such file or directory, open './example/b.txt'"]
*/
```
**finish(message)**
```js
var delayEach = require('delayeach')
var arr = [1,2,3]
delayEach(arr, function (item, index, next, finish) {
console.log(item)
if (index === 1) {
finish('index: 1')
}
next()
}, function finish(log) {
switch(log) {
case 'index: 1':
console.log('do something...')
break
default:
console.log('each all the data')
}
})
```
```js
/**
* function delayEach - 延迟遍历
* @param {array} task
* @param {taskHandle}
* @param {finishCallback}
*/
/**
* @callback - handle
* @param {any} - value
* @param {number} - index
* @param {function} - next
* @param {function} - finish
*/
/**
* @callback - finish
*/
```