Function core::result::foldUnstable

pub fn fold<T, V, E, F: FnMut(V, T) -> V, Iter: Iterator<Item=Result<T, E>>>(iterator: Iter, init: V, f: F) -> Result<V, E>

Perform a fold operation over the result values from an iterator.

If an Err is encountered, it is immediately returned. Otherwise, the folded value is returned.