struct PeekableIter
pub struct PeekableIter<I :: [Iterator]> :: [Iterator]Conforms to Iterator, Closeable.
Yields the values of an iterator and lets PeekableIter.peek look at the next one without
taking it; made by it.peekable().
Methods
pub mut fn peek(): ?I.Item throws I.ErrorReturns the value the next next() will return, or null at the end, without taking it.
The value is pulled from the inner iterator once; further calls return it again.
pub mut fn next(): ?I.Item throws I.Errorfn close(): void throws I.Error