https://github.com/therealklanni/yl

Yl
https://github.com/therealklanni/yl

Last synced: 2 days ago
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Yl

• Host: GitHub
• URL: https://github.com/therealklanni/yl
• Owner: therealklanni
• Created: 2015-08-11T04:47:41.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2017-04-21T23:13:19.000Z (over 7 years ago)
• Last Synced: 2024-10-31T11:58:33.306Z (20 days ago)
• Language: JavaScript
• Homepage:
• Size: 3.91 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Yl ("while")

> :fire: This is a proof-of-concept library and should **not** be used in production!

Because this lib uses something like recursion, it cannot handle very large sets

and can easily exceed the stack limit in such cases.

Demonstrates using the Y-combinator to create a function with `while`-like behavior.

> **Read more about the Y-combinator in [The Mysterious Y-combinator](https://medium.com/@therealklanni/the-mysterious-y-combinator-e824bebf8c96)**

## Use

Pass a function in that takes the current iteration (`Number`) as its argument.

Return `false` to exit the function early (before the iterations are complete).

The value you return from the final iteration will be the exit value.

Also supports currying.

Pass a number of times to loop as the second argument. Loop until `false` is returned by using a negative number.

```js

import Yl from 'yl-while'

// generate a random number over 50

let num = Yl(i => {

  let n = Math.floor(Math.random() * 100)

  return n > 50 ? n : false

}, -1)

```

## License

MIT © Kevin Lanni