Dependency Injection basics- Fun Fun Function

💖 Support the show by becoming a Patreon
https://www.patreon.com/funfunfunction

Dependency injection (here shown using JavaScript) is a software design pattern that is primarily to make code unit testable, by moving the responsibility for getting dependencies outside the code that depends on it. It does require some restructuring of your application, which feels a bit wrong to do just to get testability, but it’s an otherwise remarkably simple pattern that gets the job done.

🔗 Code from the episode
https://gist.github.com/mpj/c55dc66bc2cfd389dbbd25ab5092d4f3

🔗 Promises in JavaScript video
https://www.youtube.com/watch?v=2d7s3spWAzo

🔗 Fetch API video
https://www.youtube.com/watch?v=g6-ZwZmRncs

🔗 Composition over inheritance (Other video referenced at the end)
https://www.youtube.com/watch?v=GhbhD1HR5vk&index=1&list=PL0zVEGEvSaeHBZFy6Q8731rcwk0Gtuxub

🔗 Mocha (test runner for JavaScript)
https://mochajs.org/

🔗 node.js (run JavaScript in the command line)
https://nodejs.org/en/

🔗 npm (package manager for JavaScript)
https://www.npmjs.com/

🔗 Music: Peacock by 7 minutes dead
https://www.youtube.com/watch?v=Mi-xOhMqrkg

🔗 Music: Funky One by Incompetech
http://incompetech.com/music/royalty-free/index.html?keywords=Funky+One

🔗 FIGHT by Tokyo Machine
https://www.youtube.com/watch?v=qvBlHBHUTMs

💛 Follow on Twitch
We record the show live Mondays 7 AM PT
https://twitch.tv/funfunfunction

💛 Fun Fun Forum
Private discussion forum with other viewers in between shows. https://www.funfunforum.com. Available to patron members, become one at https://www.patreon.com/funfunfunction

💛 mpj on Twitter
https://twitter.com/mpjme

💛 CircleCI (Show sponsor)
Robust and sleek Docker-based Continuous Integration as a service. I used CircleCI prior to them becoming a sponsor and I love that their free tier is powerful enough for small personal projects, even if they are private. Use this link when you sign up to let them know you came from here:
https://circleci.funfunfunction.com

💛 Quokka (Show sponsor)
Wonder how MPJ evaluates JavaScript inline his editor. Quokka is the answer - use this link when you buy to let them know you came from here:
http://quokka.funfunfunction.com

💛 FUN FUN FUNCTION
Since 2015, Fun Fun Function (FFF) is one of the longest running weekly YouTube shows on programming 🏅 thanks to its consistency and quality reaching 200,000+ developers.

🤦‍♂️ The Failing Together concept is what makes FFF unique. Most coding content out there focus on step-by-step tutorials. We think tutorials are too far removed from what everyday development is like. Instead, FFF has created a completely new learning environment where we grow from failure, by solving problems while intensively interacting with a live audience.

Tutorials try to solve a problem. Failing Together makes you grow as a developer and coworker.

📹 Each show is recorded live on Twitch in a 2-hour livestream on Mondays. The host, assisted by the audience, is tasked to complete a programming challenge by an expert guest. Like in the real world, we often fail, and learn from it. This, of course, reflects what the audience identifies with, and is one of the most praised aspects of the show.

⏯ On Fridays, an edited version of the show is adapted for and published on YouTube.

Content Topics revolve around: JavaScript, Functional Programming, Software Architecture, Quality Processes, Developer Career and Health, Software Development, Project Management

Видео Dependency Injection basics- Fun Fun Function канала Fun Fun Function