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Since we're building up a team to work on Rust I now get to do more Rust-based phone screens and coding interviews. It's noticeable that rust developers code is very consistent and idiomatic. Much more so than either C, C++, or Java. More like Python or Go in that way.

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Nothing but antic clay

@joranwei

Nov 12, 2020

Interesting! Do you mean self-consistent, or consistent across interviewees? I would've guessed a fair bit of variation where you can either tend more ML-ish, or more imperative. E.g. control flow statements + mutation vs. combinators, `match` as an expression, &c.

llogiq

@llogiq

Nov 13, 2020

Sure, but in Rust, all those styles are understood. And while you can go overboard with functional idioms, this will slow your compile times – a way the compiler tells you it prefers simple code.

Replying to

and

To attempt to clarify, I don't think it's so much that the functional idioms aren't simple, it's more that it can be pretty complicated to express those idioms in Rust, leading to lots of monomorphisation and complicated generics if you aren't careful.

7:09 AM · Nov 13, 2020Twitter Web App

Replying to

I dream of a day when Option::map across all uses doesn't generate more LLVM IR than any other function.