1 /// Polyfill for `Option::unwrap()` as a const fn; feature `const_option`.
2 /// https://github.com/rust-lang/rust/issues/67441.
3 /// TODO(MSRV): Replace this with `x.unwrap()`.
4 ///
5 /// `T: Copy` avoids "constant functions cannot evaluate destructors."
unwrap_const<T>(x: Option<T>) -> T where T: Copy,6 pub const fn unwrap_const<T>(x: Option<T>) -> T
7 where
8     T: Copy,
9 {
10     if let Some(x) = x {
11         x
12     } else {
13         panic!("unwrap_const on `None`");
14     }
15 }
16