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Another option for ML-variant fans is F#, which has a REPL as well (built into many tools such as Rider or VS, or as a standalone 'fsi' executable).

I'm using F# + Rider at the moment as my language of choice for implementing interpreters and compilers and I have to say, I'm very pleased so far.

I've been using VS Code Notebooks with F# - it's fantastic. Basically Jupyter Notebooks for VS Code.