this post was submitted on 03 Jul 2023
100 points (96.3% liked)
Programming
17378 readers
268 users here now
Welcome to the main community in programming.dev! Feel free to post anything relating to programming here!
Cross posting is strongly encouraged in the instance. If you feel your post or another person's post makes sense in another community cross post into it.
Hope you enjoy the instance!
Rules
Rules
- Follow the programming.dev instance rules
- Keep content related to programming in some way
- If you're posting long videos try to add in some form of tldr for those who don't want to watch videos
Wormhole
Follow the wormhole through a path of communities !webdev@programming.dev
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
That would be a good solution most of the time, yes
Yeah, I find DI really scary. It practically shifts the complexity elsewhere, out of the programming language and program, and into configuration and classloading magic, that you may eventually discover at runtime.
I think I would prefer languages to embark proper abstractions for that. Scala has implicits which are not as refined as some DI frameworks I'm sure, but do the job in practice. In general, there should be a way for programs to delineate portions of code that expose/depend on certain capabilities (use a database, or more generally run asynchronous, frees its own memory, is a pure calculation), and this is an avenue being researched in capabilities-based languages.
I hear your concerns about DI frameworks and I agree it would be preferable if their config could somehow be validated at compile time instead of runtime. That being said, in my experience, runtime issues are fairly rare. Some DI frameworks even provide a simple method you can call at runtime to validate config at startup. Furthermore, you can use the DI pattern without a framework— design your classes accordingly, then create and inject the dependencies yourself instead. The point is to program against abstractions to make your code more testable, and while a framework can automate away some of the bookkeeping, you can dispense with using a framework for any of a number of valid reasons.