Why `PeekingNext` does not provide `peek` method?

[TonalidadeHidrica]

In my understanding, PeekingNext is a iterator from which we can obtain the reference to the next element. Currently this trait requires peeking_next function, that consumes the next element when the predicate is satisfied. But what if I want the peek behavior, in which the next element is not consumed? I think it is reasonable to provide such trait method too. Is there a reason that there isn't?

[jendrikw]

I think this can be implemented with something like this:

fn peek(&mut self) -> bool {
    let mut element;
    self.peeking_next(|x| {
        element = x;
        false
    });
    element
}

[TonalidadeHidrica]

I see, that's not really clean but it does work. Thanks.

[jendrikw]

I agree that implementing peeking_next in terms of peek would be better.