Sep 9, 2021 JavaScript
How to swap the rows and columns of a matrix in JavaScript

In this Article we will go through how to swap the rows and columns of a matrix only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const transpose = matrix => matrix[0].map((col, i) => matrix.map(row => row[i]));

Sep 9, 2021 JavaScript
How to swap two array items in JavaScript

In this Article we will go through how to swap two array items only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const swapItems = (a, i, j) => a[i] && a[j] && [...a.slice(0, i), a[j], ...a.slice(i + 1, j), a[i], ...a.slice(j + 1)] || a;

Sep 9, 2021 JavaScript
How to unzip an array of arrays in JavaScript

In this Article we will go through how to unzip an array of arrays only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const unzip = arr => arr.reduce((acc, c) => (c.forEach((v, i) => acc[i].push(v)), acc), Array.from({ length: Math.max(...arr.map(a => a.length)) }, (_) => []));

Sep 9, 2021 JavaScript
How to zip multiple arrays in JavaScript

In this Article we will go through how to zip multiple arrays only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const zip = (...arr) => Array.from({ length: Math.max(...arr.map(a => a.length)) }, (_, i) => arr.map(a => a[i]));

Sep 9, 2021 JavaScript
How to find the maximum item of an array by given key in JavaScript

In this Article we will go through how to find the maximum item of an array by given key only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const maxBy = (arr, key) => arr.reduce((a, b) => a[key] >= b[key] ? a : b, {});

Sep 9, 2021 JavaScript
How to find the maximum item of an array in JavaScript

In this Article we will go through how to find the maximum item of an array only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const max = arr => Math.max(...arr);

Sep 9, 2021 JavaScript
How to find the minimum item of an array by given key in JavaScript

In this Article we will go through how to find the minimum item of an array by given key only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const minBy = (arr, key) => arr.reduce((a, b) => a[key] < b[key] ? a : b, {});

Sep 9, 2021 JavaScript
How to find the minimum item of an array in JavaScript

In this Article we will go through how to find the minimum item of an array only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const min = arr => Math.min(...arr);

Sep 9, 2021 JavaScript
How to flatten an array in JavaScript

In this Article we will go through how to flatten an array only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const flat = arr => [].concat.apply([], arr.map(a => Array.isArray(a) ? flat(a) : a));

Sep 9, 2021 JavaScript
How to get all arrays of consecutive elements in JavaScript

In this Article we will go through how to get all arrays of consecutive elements only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const getConsecutiveArrays = (arr, size) => size > arr.length ? [] : arr.slice(size - 1).map((_, i) => arr.slice(i, size + i));