25 lines
604 B
Markdown
25 lines
604 B
Markdown
---
|
|
title: Logical and for functions
|
|
type: snippet
|
|
tags: [function,logic]
|
|
unlisted: true
|
|
cover: succulent-2
|
|
dateModified: 2021-01-04T13:04:15+02:00
|
|
---
|
|
|
|
Checks if both of the given functions return `true` for a given set of arguments.
|
|
|
|
- Use the logical and (`&&`) operator on the result of calling the two functions with the supplied `args`.
|
|
|
|
```js
|
|
const both = (f, g) => (...args) => f(...args) && g(...args);
|
|
```
|
|
|
|
```js
|
|
const isEven = num => num % 2 === 0;
|
|
const isPositive = num => num > 0;
|
|
const isPositiveEven = both(isEven, isPositive);
|
|
isPositiveEven(4); // true
|
|
isPositiveEven(-2); // false
|
|
```
|