17 lines
320 B
Markdown
17 lines
320 B
Markdown
---
|
|
title: unary
|
|
tags: function,beginner
|
|
---
|
|
|
|
Creates a function that accepts up to one argument, ignoring any additional arguments.
|
|
|
|
- Call the provided function, `fn`, with just the first argument supplied.
|
|
|
|
```js
|
|
const unary = fn => val => fn(val);
|
|
```
|
|
|
|
```js
|
|
['6', '8', '10'].map(unary(parseInt)); // [6, 8, 10]
|
|
```
|