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Justin Langlinais
Justin Langlinais

39 Followers

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Nov 16, 2020

Ruby — Strings Under a Microscope

I did a deep dive into Ruby this week, with a huge chunk of my work being on Ruby Koans’ test-driven road to Ruby enlightenment. These are basically notes and things I learned along the way… Everything in Ruby is an object, and has a unique object_id. There are some…

Ruby

3 min read

Ruby — Strings Under a Microscope
Ruby — Strings Under a Microscope
Ruby

3 min read


Nov 9, 2020

Understanding Arrow Functions in Javascript

While learning React, I used arrow functions quite a bit, but I never deeply understood how they work or when to use them. It’s time to dive deeper. Differences between an arrow function expression and a traditional function expression: Can’t use this or super, and should not be used as…

JavaScript

3 min read

Understanding Arrow Functions in Javascript
Understanding Arrow Functions in Javascript
JavaScript

3 min read


Nov 1, 2020

Using Three.js to make a 3D Scene in React.js

Three.js is a Javascript framework for displaying 3D content on the web. You can create some really cool 3D projects and animations simply using Javascript. No high-end PC and software required! I discovered this library and have been playing around with it quite a bit, in addition to drei and…

JavaScript

4 min read

Using Three.js to make a 3D Scene in React.js
Using Three.js to make a 3D Scene in React.js
JavaScript

4 min read


Oct 26, 2020

Redux in React.js — Reducers and Slices

Let’s explore a basic counter app. We’ll have a button to increment a counter, a button to decrement it, a form input to enter any integer, and a button to add that value to the counter. …

JavaScript

3 min read

Redux in React.js — Reducers and Slices
Redux in React.js — Reducers and Slices
JavaScript

3 min read


Oct 19, 2020

Redux in React.js — Intro

Welcome to my first in a series of posts I’ll be making on learning Redux. To start, what is Redux? Redux is a state management tool that allows us to access and modify state across our app without having to pass it along to components as props. As our apps…

JavaScript

4 min read

Redux in React.js — Intro
Redux in React.js — Intro
JavaScript

4 min read


Oct 11, 2020

Hooks in React — useEffect

React’s useEffect hook will perform an action on every render or re-render. This is great for changing elements on the DOM or fetching data from an API. For this walkthrough, we’ll use useEffect to simply change our document.title Let’s build an app to track the submissions we got tonight in…

JavaScript

4 min read

Hooks in React — useEffect
Hooks in React — useEffect
JavaScript

4 min read


Published in

Level Up Coding

·Oct 4, 2020

Learning Higher Order Components in React.js

Higher-Order Components are a technique used in React that allows us to reuse component logic. An example of this would be a component that renders conditionally based on whether the user is logged in. More specifically, a Higher-Order Component is a function that takes a component as an argument and…

Reactjs

6 min read

Learning Higher Order Components in React.js
Learning Higher Order Components in React.js
Reactjs

6 min read


Sep 27, 2020

Hooks in React — The Basics

Are you tired of having to use class components and pass props along for all your state management in React? Looking to optimize your workflows by using more functional components and less class components? Hooks are a tool that could be very helpful for you! In the past, we relied…

React

3 min read

Hooks in React — The Basics
Hooks in React — The Basics
React

3 min read


Published in

Dev Genius

·Jun 15, 2020

Using fetch to update the database and DOM without refreshing the page

This past week, I learned how to use fetch to manipulate the DOM with JavaScript. As I progressed, I got really stuck trying to post new data or update existing data both on the page and in the database, without requiring a page refresh. Before I talk through my solution…

JavaScript

4 min read

Using fetch to update the database and DOM without refreshing the page
Using fetch to update the database and DOM without refreshing the page
JavaScript

4 min read


Jun 1, 2020

Using Adobe Color to choose a color theme for your project

Choosing a color theme is a critically important step in design. When you are creating anything that is consumer-facing, you want to use colors that work well together and create engagement. …

Software Engineering

3 min read

Using Adobe Color to choose a color theme for your project
Using Adobe Color to choose a color theme for your project
Software Engineering

3 min read

Justin Langlinais

Justin Langlinais

39 Followers

Software Engineer and Brazilian Jiu-Jitsu brown belt

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