Panics

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

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