I was commenting specifically on "JIT Compiler". It should really be "JIT Interpreter". Naturally, it's possible to write an interpreter for any language that i

I was commenting specifically on "JIT Compiler". It should really be "JIT Interpreter". Naturally, it's possible to write an interpreter for any language that is compiled (though sometimes the semantics don't make sense). For a language like Rust, you'd probably want to compile to a bytecode to interpret, to allow all the compiler checks to be preserved. Out of interest, I did a search, and there does seem to be a (depreciated) Rust REPL.