One thing I really like about the Rust compiler is that it gives a lot of helpful hints to compiler errors.
I'm currently trying to learn the language, and I don't feel like I'm "Fighting the borrow checker" as many people used to complain. I suspect it's because the compiler developers really thought through how to give useful and helpful error messages. The messages really guide me into managing my memory correctly!
rustc was the first (and currently only) compiler I ever contributed to. I think many people in the Rust community are that way. IMO the way they introduce new people to compiler development is top notch. Yes, some algorithms are extremely complicated, like how match statements are translated, but for most changes, you don't need to touch these areas. A lot of compiler engineering is "just" straightforward implementations of papers (like rustc's float parsing bases on a paper), or even simpler, shoveling data from one place to another, and doing that in a multi hundred kloc codebase. It's not trivial, but certainly not magic either.
For the future I hope that some of the custom things that the compiler requires (x.py build system, nightly RUSTC_BOOTSTRAP hack, etc) will be reduced to the needed minimum to make it easier for people from the wider rust community to jump into development, but they have already adjusted many things to rust customs, like introducing Cargo.toml, linking between compiler crates through Cargo.toml instead of just doing extern crate, gradually replacing rustc_serialize with more standard things, etc.
It has a theme picker at the top. You’re probably operating in dark mode, so the theme picker is matching with its dark theme. Use one of the lighter themes for better readability.
It's just CSS with a little JS. Define your colours in some css variables, use the variables in your styling, then update the variables based on which selection was chosen.
Duckduckgo has themes and they're pretty privacy oriented. I don't think it will contribute to fingerprinting. The media prefers-color-scheme browser setting might contribute to that though, which let's you have different theme defaults depending on browser preference
I'm currently trying to learn the language, and I don't feel like I'm "Fighting the borrow checker" as many people used to complain. I suspect it's because the compiler developers really thought through how to give useful and helpful error messages. The messages really guide me into managing my memory correctly!