Rupert 'fildon' McKay
Rupert 'fildon' McKay's Blog

Rupert 'fildon' McKay's Blog

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Rupert 'fildon' McKay

Rupert 'fildon' McKay

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Staff Software Engineer at Lokalise. I love TypeScript/React/Jest and love to teach others about them. Check out more of my stuff over here:

https://fildon.me/

Asynchronous Programming in TypeScript

May 16, 20226 min read 1.9K 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 read 2.4K 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 read 4.6K 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 read 2.2K 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 read 5.3K 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 read 1.6K 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