Rust

This, together with the borrow checker, ensures that there are (nearly) no "weird bugs". Where in C++ one quite regularly hits issues that at first glimpse seem impossible, and only can be explained after several days of research on cppreference ("oh, so the C++ standard says that if this piece of code gets compiled on a full moon on a computer with a blue power LED, it's undefined behaviour"), that almost never happens in Rust.

Ah yes, the Chaos Theory principal of programming.

You've settled my mind on which language to tackle next. There are a couple projects that have been calling my name, one in Go and one in Rust. Strictly speaking, I might be able to contribute to their documentation and tutorials without ever looking at the code (nobody in their right mind would ever accept code from me anyway), but I like to have some idea of what goes on under the hood.

Rust it is.