Skip to content
Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

unwrap

Take the value out of an Option or Result, panicking if there isn't one.

unwrap() returns the Some/Ok value or panics; expect(msg) does the same with a custom message.

Loading interactive…

Examples

  • "80a0".parse::<u16>().unwrap() panics, because parse returns an Err of kind InvalidDigit.

Read the full section →