Trait Index

pub trait Index<T> {
    type Output<'a>
       where Self: 'a;

    // Required method
    fn index(&self, idx: T) -> Self::Output<'_>;
}

Index operator for immutable contexts. As opposed to std, the returned value can be a non-reference. This allows custom reference types for things like multi-dimensional matrices.

Required Associated Types

type Output<'a> where Self: 'a

The output type of indexing this value

Required Methods

fn index(&self, idx: T) -> Self::Output<'_>

Get the value at this index immutably

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<T, I> Index<I> for T

where T: Index<I> + ?Sized, T::Output: 'static,

type Output<'a> = &'a <T as Index<I>>::Output where Self: 'a