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<h1 align="center">Neo-Async</h1>
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<p align="center">
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<img src="https://raw.githubusercontent.com/wiki/suguru03/neo-async/images/neo_async_v2.png" width="250px" />
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</p>
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<p align="center">
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<a href="https://www.npmjs.com/package/neo-async"><img alt="npm" src="https://img.shields.io/npm/v/neo-async.svg"></a>
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<a href="https://travis-ci.org/suguru03/neo-async"><img alt="Travis Status" src="https://img.shields.io/travis/suguru03/neo-async.svg"></a>
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<a href="https://codecov.io/gh/suguru03/neo-async"><img alt="Coverage Status" src="https://img.shields.io/codecov/c/github/suguru03/neo-async/master.svg"></a>
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<a href="https://www.npmjs.com/package/neo-async"><img alt="download" src="https://img.shields.io/npm/dm/neo-async.svg"></a>
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<a href="https://lgtm.com/projects/g/suguru03/neo-async/context:javascript"><img src="https://img.shields.io/lgtm/grade/javascript/g/suguru03/neo-async.svg?logo=lgtm&logoWidth=18" alt="Code Quality: Javascript" height="18"></a>
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<a href="https://lgtm.com/projects/g/suguru03/neo-async/alerts"><img src="https://img.shields.io/lgtm/alerts/g/suguru03/neo-async.svg?logo=lgtm&logoWidth=18" alt="Total Alerts" height="18"></a>
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</p>
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Neo-Async is thought to be used as a drop-in replacement for [Async](https://github.com/caolan/async), it almost fully covers its functionality and runs [faster](#benchmark).
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Benchmark is [here](#benchmark)!
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Bluebird's benchmark is [here](https://github.com/suguru03/bluebird/tree/aigle/benchmark)!
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## Code Coverage
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## Installation
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### In a browser
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```html
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<script src="async.min.js"></script>
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```
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### In an AMD loader
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```js
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require(['async'], function(async) {});
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```
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### Promise and async/await
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I recommend to use [`Aigle`](https://github.com/suguru03/aigle).
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It is optimized for Promise handling and has almost the same functionality as `neo-async`.
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### Node.js
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#### standard
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```bash
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$ npm install neo-async
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```
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```js
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var async = require('neo-async');
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```
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#### replacement
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```bash
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$ npm install neo-async
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$ ln -s ./node_modules/neo-async ./node_modules/async
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```
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```js
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var async = require('async');
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```
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### Bower
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```bash
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bower install neo-async
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```
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## Feature
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[JSDoc](http://suguru03.github.io/neo-async/doc/async.html)
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\* not in Async
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### Collections
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- [`each`](http://suguru03.github.io/neo-async/doc/async.each.html)
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- [`eachSeries`](http://suguru03.github.io/neo-async/doc/async.eachSeries.html)
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- [`eachLimit`](http://suguru03.github.io/neo-async/doc/async.eachLimit.html)
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80
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- [`forEach`](http://suguru03.github.io/neo-async/doc/async.each.html) -> [`each`](http://suguru03.github.io/neo-async/doc/async.each.html)
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- [`forEachSeries`](http://suguru03.github.io/neo-async/doc/async.eachSeries.html) -> [`eachSeries`](http://suguru03.github.io/neo-async/doc/async.eachSeries.html)
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- [`forEachLimit`](http://suguru03.github.io/neo-async/doc/async.eachLimit.html) -> [`eachLimit`](http://suguru03.github.io/neo-async/doc/async.eachLimit.html)
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- [`eachOf`](http://suguru03.github.io/neo-async/doc/async.each.html) -> [`each`](http://suguru03.github.io/neo-async/doc/async.each.html)
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- [`eachOfSeries`](http://suguru03.github.io/neo-async/doc/async.eachSeries.html) -> [`eachSeries`](http://suguru03.github.io/neo-async/doc/async.eachSeries.html)
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- [`eachOfLimit`](http://suguru03.github.io/neo-async/doc/async.eachLimit.html) -> [`eachLimit`](http://suguru03.github.io/neo-async/doc/async.eachLimit.html)
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86
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- [`forEachOf`](http://suguru03.github.io/neo-async/doc/async.each.html) -> [`each`](http://suguru03.github.io/neo-async/doc/async.each.html)
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- [`forEachOfSeries`](http://suguru03.github.io/neo-async/doc/async.eachSeries.html) -> [`eachSeries`](http://suguru03.github.io/neo-async/doc/async.eachSeries.html)
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- [`eachOfLimit`](http://suguru03.github.io/neo-async/doc/async.eachLimit.html) -> [`forEachLimit`](http://suguru03.github.io/neo-async/doc/async.eachLimit.html)
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- [`map`](http://suguru03.github.io/neo-async/doc/async.map.html)
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- [`mapSeries`](http://suguru03.github.io/neo-async/doc/async.mapSeries.html)
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- [`mapLimit`](http://suguru03.github.io/neo-async/doc/async.mapLimit.html)
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- [`mapValues`](http://suguru03.github.io/neo-async/doc/async.mapValues.html)
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- [`mapValuesSeries`](http://suguru03.github.io/neo-async/doc/async.mapValuesSeries.html)
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- [`mapValuesLimit`](http://suguru03.github.io/neo-async/doc/async.mapValuesLimit.html)
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- [`filter`](http://suguru03.github.io/neo-async/doc/async.filter.html)
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- [`filterSeries`](http://suguru03.github.io/neo-async/doc/async.filterSeries.html)
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- [`filterLimit`](http://suguru03.github.io/neo-async/doc/async.filterLimit.html)
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- [`select`](http://suguru03.github.io/neo-async/doc/async.filter.html) -> [`filter`](http://suguru03.github.io/neo-async/doc/async.filter.html)
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- [`selectSeries`](http://suguru03.github.io/neo-async/doc/async.filterSeries.html) -> [`filterSeries`](http://suguru03.github.io/neo-async/doc/async.filterSeries.html)
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- [`selectLimit`](http://suguru03.github.io/neo-async/doc/async.filterLimit.html) -> [`filterLimit`](http://suguru03.github.io/neo-async/doc/async.filterLimit.html)
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- [`reject`](http://suguru03.github.io/neo-async/doc/async.reject.html)
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- [`rejectSeries`](http://suguru03.github.io/neo-async/doc/async.rejectSeries.html)
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- [`rejectLimit`](http://suguru03.github.io/neo-async/doc/async.rejectLimit.html)
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- [`detect`](http://suguru03.github.io/neo-async/doc/async.detect.html)
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- [`detectSeries`](http://suguru03.github.io/neo-async/doc/async.detectSeries.html)
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- [`detectLimit`](http://suguru03.github.io/neo-async/doc/async.detectLimit.html)
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- [`find`](http://suguru03.github.io/neo-async/doc/async.detect.html) -> [`detect`](http://suguru03.github.io/neo-async/doc/async.detect.html)
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108
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- [`findSeries`](http://suguru03.github.io/neo-async/doc/async.detectSeries.html) -> [`detectSeries`](http://suguru03.github.io/neo-async/doc/async.detectSeries.html)
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- [`findLimit`](http://suguru03.github.io/neo-async/doc/async.detectLimit.html) -> [`detectLimit`](http://suguru03.github.io/neo-async/doc/async.detectLimit.html)
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- [`pick`](http://suguru03.github.io/neo-async/doc/async.pick.html) *
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- [`pickSeries`](http://suguru03.github.io/neo-async/doc/async.pickSeries.html) *
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- [`pickLimit`](http://suguru03.github.io/neo-async/doc/async.pickLimit.html) *
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- [`omit`](http://suguru03.github.io/neo-async/doc/async.omit.html) *
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- [`omitSeries`](http://suguru03.github.io/neo-async/doc/async.omitSeries.html) *
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- [`omitLimit`](http://suguru03.github.io/neo-async/doc/async.omitLimit.html) *
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- [`reduce`](http://suguru03.github.io/neo-async/doc/async.reduce.html)
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- [`inject`](http://suguru03.github.io/neo-async/doc/async.reduce.html) -> [`reduce`](http://suguru03.github.io/neo-async/doc/async.reduce.html)
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118
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- [`foldl`](http://suguru03.github.io/neo-async/doc/async.reduce.html) -> [`reduce`](http://suguru03.github.io/neo-async/doc/async.reduce.html)
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119
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- [`reduceRight`](http://suguru03.github.io/neo-async/doc/async.reduceRight.html)
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- [`foldr`](http://suguru03.github.io/neo-async/doc/async.reduceRight.html) -> [`reduceRight`](http://suguru03.github.io/neo-async/doc/async.reduceRight.html)
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- [`transform`](http://suguru03.github.io/neo-async/doc/async.transform.html)
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- [`transformSeries`](http://suguru03.github.io/neo-async/doc/async.transformSeries.html) *
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- [`transformLimit`](http://suguru03.github.io/neo-async/doc/async.transformLimit.html) *
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- [`sortBy`](http://suguru03.github.io/neo-async/doc/async.sortBy.html)
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- [`sortBySeries`](http://suguru03.github.io/neo-async/doc/async.sortBySeries.html) *
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- [`sortByLimit`](http://suguru03.github.io/neo-async/doc/async.sortByLimit.html) *
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- [`some`](http://suguru03.github.io/neo-async/doc/async.some.html)
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- [`someSeries`](http://suguru03.github.io/neo-async/doc/async.someSeries.html)
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129
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- [`someLimit`](http://suguru03.github.io/neo-async/doc/async.someLimit.html)
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130
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- [`any`](http://suguru03.github.io/neo-async/doc/async.some.html) -> [`some`](http://suguru03.github.io/neo-async/doc/async.some.html)
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131
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- [`anySeries`](http://suguru03.github.io/neo-async/doc/async.someSeries.html) -> [`someSeries`](http://suguru03.github.io/neo-async/doc/async.someSeries.html)
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132
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- [`anyLimit`](http://suguru03.github.io/neo-async/doc/async.someLimit.html) -> [`someLimit`](http://suguru03.github.io/neo-async/doc/async.someLimit.html)
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133
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- [`every`](http://suguru03.github.io/neo-async/doc/async.every.html)
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134
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- [`everySeries`](http://suguru03.github.io/neo-async/doc/async.everySeries.html)
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135
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- [`everyLimit`](http://suguru03.github.io/neo-async/doc/async.everyLimit.html)
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136
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- [`all`](http://suguru03.github.io/neo-async/doc/async.every.html) -> [`every`](http://suguru03.github.io/neo-async/doc/async.every.html)
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137
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- [`allSeries`](http://suguru03.github.io/neo-async/doc/async.everySeries.html) -> [`every`](http://suguru03.github.io/neo-async/doc/async.everySeries.html)
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138
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- [`allLimit`](http://suguru03.github.io/neo-async/doc/async.everyLimit.html) -> [`every`](http://suguru03.github.io/neo-async/doc/async.everyLimit.html)
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139
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- [`concat`](http://suguru03.github.io/neo-async/doc/async.concat.html)
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140
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- [`concatSeries`](http://suguru03.github.io/neo-async/doc/async.concatSeries.html)
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141
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- [`concatLimit`](http://suguru03.github.io/neo-async/doc/async.concatLimit.html) *
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143
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### Control Flow
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144
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145
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- [`parallel`](http://suguru03.github.io/neo-async/doc/async.parallel.html)
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146
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- [`series`](http://suguru03.github.io/neo-async/doc/async.series.html)
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147
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- [`parallelLimit`](http://suguru03.github.io/neo-async/doc/async.series.html)
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148
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- [`tryEach`](http://suguru03.github.io/neo-async/doc/async.tryEach.html)
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149
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- [`waterfall`](http://suguru03.github.io/neo-async/doc/async.waterfall.html)
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150
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- [`angelFall`](http://suguru03.github.io/neo-async/doc/async.angelFall.html) *
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151
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- [`angelfall`](http://suguru03.github.io/neo-async/doc/async.angelFall.html) -> [`angelFall`](http://suguru03.github.io/neo-async/doc/async.angelFall.html) *
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152
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- [`whilst`](#whilst)
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153
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- [`doWhilst`](#doWhilst)
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154
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- [`until`](#until)
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155
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- [`doUntil`](#doUntil)
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156
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- [`during`](#during)
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157
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- [`doDuring`](#doDuring)
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158
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- [`forever`](#forever)
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159
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- [`compose`](#compose)
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160
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- [`seq`](#seq)
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161
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- [`applyEach`](#applyEach)
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162
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- [`applyEachSeries`](#applyEachSeries)
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163
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- [`queue`](#queue)
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164
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- [`priorityQueue`](#priorityQueue)
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165
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- [`cargo`](#cargo)
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166
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- [`auto`](#auto)
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167
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- [`autoInject`](#autoInject)
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168
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- [`retry`](#retry)
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169
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- [`retryable`](#retryable)
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170
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- [`iterator`](#iterator)
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171
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- [`times`](http://suguru03.github.io/neo-async/doc/async.times.html)
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172
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- [`timesSeries`](http://suguru03.github.io/neo-async/doc/async.timesSeries.html)
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173
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- [`timesLimit`](http://suguru03.github.io/neo-async/doc/async.timesLimit.html)
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174
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- [`race`](#race)
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175
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176
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### Utils
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177
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- [`apply`](#apply)
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178
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- [`setImmediate`](#setImmediate)
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179
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- [`nextTick`](#nextTick)
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180
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- [`memoize`](#memoize)
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181
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- [`unmemoize`](#unmemoize)
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182
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- [`ensureAsync`](#ensureAsync)
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183
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- [`constant`](#constant)
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184
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- [`asyncify`](#asyncify)
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185
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- [`wrapSync`](#asyncify) -> [`asyncify`](#asyncify)
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186
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- [`log`](#log)
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187
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- [`dir`](#dir)
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188
|
- [`timeout`](http://suguru03.github.io/neo-async/doc/async.timeout.html)
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189
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- [`reflect`](#reflect)
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190
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- [`reflectAll`](#reflectAll)
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191
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- [`createLogger`](#createLogger)
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192
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|
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193
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## Mode
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|
194
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- [`safe`](#safe) *
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195
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- [`fast`](#fast) *
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196
|
|
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197
|
## Benchmark
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|
198
|
|
|
199
|
[Benchmark: Async vs Neo-Async](http://suguru03.hatenablog.com/entry/2016/06/10/135559)
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200
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|
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201
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### How to check
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|
202
|
|
|
203
|
```bash
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|
204
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$ node perf
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|
205
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```
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|
206
|
|
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207
|
### Environment
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|
208
|
|
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209
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* Darwin 17.3.0 x64
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|
210
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* Node.js v8.9.4
|
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211
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* async v2.6.0
|
|
212
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* neo-async v2.5.0
|
|
213
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* benchmark v2.1.4
|
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214
|
|
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215
|
### Result
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|
216
|
|
|
217
|
The value is the ratio (Neo-Async/Async) of the average speed.
|
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218
|
|
|
219
|
#### Collections
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|
220
|
|function|benchmark|
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|
221
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|---|--:|
|
|
222
|
|each/forEach|2.43|
|
|
223
|
|eachSeries/forEachSeries|1.75|
|
|
224
|
|eachLimit/forEachLimit|1.68|
|
|
225
|
|eachOf|3.29|
|
|
226
|
|eachOfSeries|1.50|
|
|
227
|
|eachOfLimit|1.59|
|
|
228
|
|map|3.95|
|
|
229
|
|mapSeries|1.81|
|
|
230
|
|mapLimit|1.27|
|
|
231
|
|mapValues|2.73|
|
|
232
|
|mapValuesSeries|1.59|
|
|
233
|
|mapValuesLimit|1.23|
|
|
234
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|filter|3.00|
|
|
235
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|filterSeries|1.74|
|
|
236
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|filterLimit|1.17|
|
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237
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|reject|4.59|
|
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238
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|rejectSeries|2.31|
|
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239
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|rejectLimit|1.58|
|
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240
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|detect|4.30|
|
|
241
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|detectSeries|1.86|
|
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242
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|detectLimit|1.32|
|
|
243
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|reduce|1.82|
|
|
244
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|transform|2.46|
|
|
245
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|sortBy|4.08|
|
|
246
|
|some|2.19|
|
|
247
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|someSeries|1.83|
|
|
248
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|someLimit|1.32|
|
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249
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|every|2.09|
|
|
250
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|everySeries|1.84|
|
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251
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|everyLimit|1.35|
|
|
252
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|concat|3.79|
|
|
253
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|concatSeries|4.45|
|
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254
|
|
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255
|
#### Control Flow
|
|
256
|
|funciton|benchmark|
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|
257
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|---|--:|
|
|
258
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|parallel|2.93|
|
|
259
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|series|1.96|
|
|
260
|
|waterfall|1.29|
|
|
261
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|whilst|1.00|
|
|
262
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|doWhilst|1.12|
|
|
263
|
|until|1.12|
|
|
264
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|doUntil|1.12|
|
|
265
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|during|1.18|
|
|
266
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|doDuring|2.42|
|
|
267
|
|times|4.25|
|
|
268
|
|auto|1.97|
|