[toastal]

This was my knee-jerk too. It’s great to see some of the good bits of ML flow into new languages, but this isn’t some Rust-specific feature. As an annoying side-effect tho, it’s been harder to pitch FP in these existing spaces since now “we have FP at home” in the existing language (even if the ergonomics are worse, it looks uglier, the language idioms & existing programs don’t match the style, & ’the bad parts’ + footguns still exist).

[vineyardmike]

Hey, incremental improvements are still improvements. Convincing everyone to change the world is hard just for immutable types or sum types or something. But I’ve seen that slowly adding in functional programming to Java caused my team to get aggressive about using it, and demand it in code reviews. Sometimes you just need the Trojan horse and people will like what they find. I don’t think I’ll convince my team to drop Java, but they’re convinced that FP is important to include, at least in little bits.