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Nim
Nim is a statically typed compiled systems programming language. It combines successful concepts from mature languages like Python, Ada and Modula. Its design focuses on efficiency, expressiveness, and elegance (in that order of priority).
Maybe try nim https://nim-lang.org/ it’s syntax is inspired by python (indentation scoping) but provides the speed and flexibility of C/++ (statically typed, meta programming is god tier). It’s not as popular as the other languages you mentioned but is probably closest to what you are looking for.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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If you're considering Ruby, maybe take a look at Crystal
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Profile and optimize the hotspots with cython (or whatever the cool kids are using these days... It's been a while.)
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Same. Numba does wonders for me in most scenarios. Yesterday I've discovered pola-rs and looks like I will add it to the stack. It's API is similar to pandas. Have a look at the benchmarks of cuDF, spark, dask, pandas compared to it: Benchmarks