Panics

Rust will trigger a panic if a fatal error happens at runtime:

1. fn main() {
2. let v = vec![10, 20, 30];
3. println!("v[100]: {}", v[100]);
4. }

• Panics are for unrecoverable and unexpected errors.
• Panics are symptoms of bugs in the program.
• Use non-panicking APIs (such as Vec::get) if crashing is not acceptable.