Not to sound like a language elitist, but I think people should mention some of the other languages they have used for more than 100 hours.
If you know only Javascript and really like it, that's great and I'm happy for you. But it doesn't really say anything about Javascript...
If you know Java, C++ and Swift, then I'd be somewhat curious which one you like and why.
If you know Haskell, Rust, Lisp and Javascript, and you like Javascript the most, then I'd be much more interested.
Maybe this sounds mean or elitist.
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I think I've used at least Python, Java, Kotlin, Bash, Rust, Javascript, Matlab and Fortran 100+ hours (maybe others).
Python would be my favorite for any small project or anything that likely be maintained much. Like (shell) scripting, proof of concepts, personal websites (backends... frontends if I could), auomating tasks... I like that it's very consistent and clean with little historical crap and few pitfalls. It's easy to write something quickly as long as it's small enough to fit in your head.
Rust would be my favorite for anything large scale (and for performance-critical code, and for playing around). I feel it's really well-designed. It helps to express and enforce assumptions that would be implicit in Python or most languages, which really helps when changing someone else's code. I can only read the signature of a function and know that an argument won't be ˋnullˋ, might be mutated, won't be dropped, that the function won't store some reference to it, and that no other thread can use it, thus the value I get back may be different, but won't change after that in non-local ways. If you've worked on multi-year projects with several dozen people, you probably know how valuable this is - otherwise it might be hard to appreciate.