Struct std::iter::Scan

pub struct Scan<'self, A, B, T, St> {
    priv iter: T,
    priv f: &'self fn(&mut St, A) -> Option<B>,
    state: St,
}

An iterator to maintain state while iterating another iterator

Trait Implementations

Advance the iterator and return the next value. Return None when the end is reached.

Return a lower bound and upper bound on the remaining length of the iterator.

The common use case for the estimate is pre-allocating space to store the results.