throwaway239i3j

Of the ones you mentioned, Zig is the only one that has explicit memory management.

> Is it worth learning

Languages are easy to pick up once you understand fundamentals. The borrow checker is intuitive if you have an understanding of stack frames, heap/data segment, references, moved types, shared memory.

You then should be asking "Is it worth using?", then evaluate use cases.. pros/cons.. etc.

For CLI, Rust is likely the easiest given it's macros, but if you struggle with the borrow checker then it won't be. You will be fighting the compiler instead of developing something.

Depending what your CLI program is doing, you might want to evaluate what libraries are available, how they handle I/O, and parallelism.

JavaScript has incredibly easy and fast concurrent I/O thanks to libuv and v8.