Macro const_panic_msg

macro_rules! const_panic_msg {
    ($visibility:vis $name:ident = $msg:literal) => { ... };
}

Declare a const PanicMsg with an &'static str message.

Example

const_panic_msg!(PRIVATE_ERROR = "This is declared with private visibility.");
const_panic_msg!(pub PUBLIC_ERROR = "This is declared with public visiblity.");
// ...
PRIVATE_ERROR.panic();
// ...
PUBLIC_ERROR.debug_assert(left < right);