use core::fmt;
pub trait UnwrapInto<T> {
fn unwrap_into(self) -> T;
fn expect_into(self, message: &str) -> T;
}
impl<T, E: fmt::Debug, S: TryInto<T, Error = E>> UnwrapInto<T> for S {
fn unwrap_into(self) -> T {
self.try_into().unwrap()
}
fn expect_into(self, message: &str) -> T {
self.try_into().expect(message)
}
}