INim

For REPL you have three options: - [0] `nim secret` : code is interpreted with Nim's vm. It is limited to compile-time evaluations (e.g. no C/C++ interop). - [1] `nlvm r` : nlvm backend supports JIT compilation and repl-like interface was added in latest release. - [2] inim : supports all nim code, but it's not really a true repl. It adds code to a file and recompiles it (you can see the source file with `ctrl+x`). I'd recommend to use it with clang compiler, because it's a bit faster than gcc in my experience. It's the best option right now. And I use it almost daily. First two options have rudimentary input system. But you can get command history and left-right navigation by wrapping them with rlwrap (should be preinstalled on most *nixes): `rlwrap nim secret`, `rlwrap nlvm r`. There are plans to support incremental compilation for the

My statement was mostly an exaggeration, than an absolute truth. REPLs are really nice, but it's story with Nim is less nice. There is: https://github.com/inim-repl/INim and the builtin `nim secret`. There is also a Jupyter kernel: https://github.com/stisa/jupyternim

It's much rougher IMO. It has no autocompletion yet [0], and you cannot copy-and-paste code in it like IPython and Julia's REPL, as it does not respect the original indentation. (Tried to copy-and-paste the first example in Nim's webpage [1] and it failed because it inserted indentation at wrong places.) For the record, IPython has the `%paste` command, and Julia's REPL automatically detects when code is being pasted (this would however be less relevant, since Julia's language is not indent-based). I am not sure if it supports plotting libraries à la matplotlib, however. If it has this capability, it might be still interesting in its present state. [0] https://github.com/inim-repl/INim/issues/14 [1] https://nim-lang.org/

inim [0], which already works pretty good, recently got an enthusiastic new maintainer, so things are good and improving. [0]: https://github.com/inim-repl/INim