Rust's `panic` and `unwrap()`: When and How to Use Them?

This article delves into the usage of `panic` and `unwrap()` in the Rust programming language. The author argues that `panic` shouldn't be used for general error handling, but as a signal of bugs within the program. `unwrap()` is acceptable in tests, example code, and prototyping, but should be used cautiously in production as it can lead to program crashes. The author thoroughly explains runtime invariants and why it's sometimes not possible or desirable to move all invariants to compile-time invariants. Finally, the author recommends using `expect()` over `unwrap()` when possible and discusses whether linting against `unwrap()` is a good idea.