Rupert McKay's Blog
Rupert McKay

Rupert McKay

51 followers

Principal Software Engineer at Odido. I love web development and love to teach others. Check out more of my stuff over here:

https://rupertmckay.com/

Asynchronous Programming in TypeScript

May 16, 20226 min read1.6K views

async/await vs promises · Key takeaways: Promises can run code after some other code has completed async/await is just syntactic sugar Promise.all is...

Asynchronous Programming in TypeScript

What is Memoization?

Feb 28, 20226 min read2.4K views

An introduction to Memoization and how to use it · Imagine I asked you to calculate 23 times 47. And let's imagine you don't have a calculator or your...

What is Memoization?

Sorting in JavaScript

Jan 17, 20228 min read4.7K views

Typical use-cases and rare edge-cases · JavaScript arrays have a builtin sort method, which mostly does what you expect: [1, 4, 2, 3].sort(); // [1, 2,...

Sorting in JavaScript

What is a number?

Jan 3, 202210 min read1.9K views

Rounding errors are inevitable · TL;DR: No datatype will ever be able to represent all numeric values perfectly Rounding errors will always...

What is a number?

React Testing Library Recipes

Dec 4, 20216 min read4.6K views

Common testing patterns for creating confidence in your UI tests · As long as I've been working in frontend development, the tools available for testing...

React Testing Library Recipes

ESLint vs Prettier

Oct 9, 20214 min read1.4K views

Why I don't use the `fix` option · Photo by Nagesh Badu on Unsplash TL;DR: ESLint should identify semantic errors which require programmer intervention...

ESLint vs Prettier