Method expect_nonempty

crates/data-structures/src/error_stream.rs:120–126

Build an error stream from a non-empty collection. If the collection is empty, panic.

(errors: I)

    /// Build an error stream from a non-empty collection.
    /// If the collection is empty, panic.
    pub fn expect_nonempty<I: IntoIterator<Item = E>>(errors: I) -> Self {
        let mut errors = errors.into_iter();
        let first = errors.next().expect("expected at least one error");
        let mut stream = Self::from(first);
        stream.extend(errors);
        stream
    }

    /// Add some extra errors to a result.
    ///