this post was submitted on 09 Oct 2025
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Programming

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I’m curious which software design principles you find most valuable in real projects.

Two concise summaries I’ve found:

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[–] bradboimler@lemmy.world 12 points 2 days ago* (last edited 2 days ago) (2 children)

I write my code for future maintainers. I optimize for clarity, testability, and readability.

I've become a huge fan of dependency injection. That does not mean I like DI frameworks (Guice). I tend to do it manually with regular code.

When I maintain code and I sit there wondering what it actually does, I write a unit test for it right then and there

And so on

[–] bufalo1973@piefed.social 1 points 13 hours ago* (last edited 13 hours ago)

And that future maintainer happens to be yourself most of the time.

[–] sip@programming.dev 3 points 2 days ago* (last edited 2 days ago) (1 children)

DI without a tool/injector is just composition. just saying

[–] nebeker@programming.dev 2 points 2 days ago (1 children)

A good reminder that composition is a useful concept.

[–] sip@programming.dev 1 points 15 hours ago

it's my fav and it's easy. allows containing details of a lower lever gizmo in a higher level thingamabob and basically free strategy pattern, especially if you use DI... and allows mock/spy testing!