Trait optional_index::OptionalIndexMut

pub trait OptionalIndexMut<I>: OptionalIndex<I> where
    I: ?Sized, {
    fn optional_index_mut(&mut self, index: I) -> Option<&mut Self::Output>;
}

Optional mutable index.

Required methods

fn optional_index_mut(&mut self, index: I) -> Option<&mut Self::Output>

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Implementations on Foreign Types

impl<T, I> OptionalIndexMut<I> for Option<T> where
    T: OptionalIndexMut<I>, 

fn optional_index_mut(&mut self, index: I) -> Option<&mut Self::Output>

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Implementors

impl<T, I, '_> OptionalIndexMut<I> for &'_ mut T where
    T: OptionalIndexMut<I>, 

fn optional_index_mut(&mut self, index: I) -> Option<&mut Self::Output>

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