Trait size_hint::HintSize

pub trait HintSize {
    fn hint_size(self, hint: usize) -> SizeHint<Self>
    where
        Self: Sized,
    { ... }
}

A helper method available on all Iterators, to set size_hint which is particulary useful in combination with std::iter::from_fn or std::iter::successors in order to allow for efficent collection into Vec

Provided methods

Important traits for SizeHint<I>

impl<I> Iterator for SizeHint<I> where
    I: Iterator + Sized,  type Item = <I as Iterator>::Item;

fn hint_size(self, hint: usize) -> SizeHint<Self> where
    Self: Sized, 

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Implementors

impl<I> HintSize for I

Important traits for SizeHint<I>

impl<I> Iterator for SizeHint<I> where
    I: Iterator + Sized,  type Item = <I as Iterator>::Item;

fn hint_size(self, hint: usize) -> SizeHint<Self> where
    Self: Sized, 

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