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scriptisto
A language-agnostic "shebang interpreter" that enables you to write scripts in compiled languages.
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Nice hack! Would it have been possible back then to use cargo to pull in some dependencies?
The clean solution of cargo script is here: https://github.com/rust-lang/cargo/issues/12207
Emacs didn't invent REPL, and it's common everywhere. For Rust: https://github.com/evcxr/evcxr/blob/main/evcxr_repl/README.m.... But heck, the compiler is reasonably fast enough that any IDE can REPL by compiling the code.
The value here is more in being able to read a script before you run it, then have it run fast, maybe tweaking something here and there. And a compiled script will run 10,000 times faster than LISP, which can be important.