274 lines
5.6 KiB
Markdown
Executable File
274 lines
5.6 KiB
Markdown
Executable File
<!-- Please do not edit this file. Edit the `blah` field in the `package.json` instead. If in doubt, open an issue. -->
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# one-by-one
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[![Support me on Patreon][badge_patreon]][patreon] [![Buy me a book][badge_amazon]][amazon] [![PayPal][badge_paypal_donate]][paypal-donations] [](https://github.com/IonicaBizau/ama) [](https://www.npmjs.com/package/one-by-one) [](https://www.npmjs.com/package/one-by-one) [](https://www.codementor.io/johnnyb?utm_source=github&utm_medium=button&utm_term=johnnyb&utm_campaign=github)
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<a href="https://www.buymeacoffee.com/H96WwChMy" target="_blank"><img src="https://www.buymeacoffee.com/assets/img/custom_images/yellow_img.png" alt="Buy Me A Coffee"></a>
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> Run async tasks one by one.
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If you want to run async functions in parallel, check out [`same-time`](https://github.com/IonicaBizau/same-time).
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## :cloud: Installation
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```sh
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# Using npm
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npm install --save one-by-one
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# Using yarn
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yarn add one-by-one
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```
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## :clipboard: Example
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```js
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const oneByOne = require("one-by-one");
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// Call these functions one by one
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oneByOne([
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cb => {
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setTimeout(function () {
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cb(null, "Hello World");
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}, 1000);
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}
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, (cb, data) => {
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console.log(data);
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// => "Hello World"
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setTimeout(function () {
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cb(new Error("Some error"));
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}, 100);
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}
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, cb => {
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// This will NOT be triggered because the
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// previous sent an error
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cb(null, null);
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}
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], (err, data) => {
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console.log(err, data);
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// => [Error: Some error] [ 'Hello World' ]
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});
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// Call these functions one by one
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oneByOne([
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Math.random() > 0.5 ? next => {
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console.log("Generated a random number greater than 0.5.");
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next();
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} : null
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, cb => setTimeout(
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() => cb(null, "Hello World")
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, 1000
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)
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, (cb, prev) => setTimeout(
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() => cb(null, prev.replace("World", "Mars"))
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, 1000
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)
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], (err, data, message) => {
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console.log(err, data, message);
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// null [ 'Hello World', 'Hello Mars' ] 'Hello Mars'
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});
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```
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## :question: Get Help
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There are few ways to get help:
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1. Please [post questions on Stack Overflow](https://stackoverflow.com/questions/ask). You can open issues with questions, as long you add a link to your Stack Overflow question.
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2. For bug reports and feature requests, open issues. :bug:
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3. For direct and quick help, you can [use Codementor](https://www.codementor.io/johnnyb). :rocket:
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## :memo: Documentation
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### `oneByOne(arr, cb)`
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Calls functions one by one and memorizes the results.
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#### Params
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- **Array** `arr`: An array of functions getting the callback parameter in the first argument and response arguments from the previous function call.
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- **Function** `cb`: The callback function called with an error (or `null`) and the results array.
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#### Return
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- **oneByOne** The `oneByOne` function.
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## :yum: How to contribute
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Have an idea? Found a bug? See [how to contribute][contributing].
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## :sparkling_heart: Support my projects
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I open-source almost everything I can, and I try to reply to everyone needing help using these projects. Obviously,
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this takes time. You can integrate and use these projects in your applications *for free*! You can even change the source code and redistribute (even resell it).
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However, if you get some profit from this or just want to encourage me to continue creating stuff, there are few ways you can do it:
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- Starring and sharing the projects you like :rocket:
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- [![Buy me a book][badge_amazon]][amazon]—I love books! I will remember you after years if you buy me one. :grin: :book:
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- [![PayPal][badge_paypal]][paypal-donations]—You can make one-time donations via PayPal. I'll probably buy a ~~coffee~~ tea. :tea:
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- [![Support me on Patreon][badge_patreon]][patreon]—Set up a recurring monthly donation and you will get interesting news about what I'm doing (things that I don't share with everyone).
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- **Bitcoin**—You can send me bitcoins at this address (or scanning the code below): `1P9BRsmazNQcuyTxEqveUsnf5CERdq35V6`
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Thanks! :heart:
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## :dizzy: Where is this library used?
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If you are using this library in one of your projects, add it in this list. :sparkles:
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- `image-to-ascii`
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- `gry`
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- `bloggify-plugin-loader`
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- `bible.js`
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- `git-package-json`
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- `engine-tools`
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- `bloggify-mongoose`
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- `blah`
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- `asyncer.js`
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- `babel-it`
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- `gif-cli`
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- `cobol`
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- `nodeice`
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- `np-init`
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- `made-in-romania`
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- `fortran`
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- `ssh-remote`
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- `tester-init`
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- `tilda-init`
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- `cdnjs-importer`
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- `@isysd/gpm`
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- `ship-release`
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- `git-stats-importer`
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- `gpm`
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- `made-in-india`
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- `machine-ip`
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- `made-in-brazil`
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## :scroll: License
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[MIT][license] © [Ionică Bizău][website]
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[license]: /LICENSE
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[website]: https://ionicabizau.net
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[contributing]: /CONTRIBUTING.md
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[docs]: /DOCUMENTATION.md
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[badge_patreon]: https://ionicabizau.github.io/badges/patreon.svg
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[badge_amazon]: https://ionicabizau.github.io/badges/amazon.svg
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[badge_paypal]: https://ionicabizau.github.io/badges/paypal.svg
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[badge_paypal_donate]: https://ionicabizau.github.io/badges/paypal_donate.svg
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[patreon]: https://www.patreon.com/ionicabizau
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[amazon]: http://amzn.eu/hRo9sIZ
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[paypal-donations]: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=RVXDDLKKLQRJW
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