Trait Tee

pub trait Tee {
    // Required method
    fn tee<const N: usize>(self) -> <Self as TeeInternal<N>>::Output
       where Self: TeeInternal<N>;
}

Required Methods

fn tee<const N: usize>(self) -> <Self as TeeInternal<N>>::Output

where Self: TeeInternal<N>,

Extension method to add tee() method to all T: Clone.

This can’t be done directly as part of TeeInternal because it makes specifying the const param at the tee() invocation site cumbersome: TeeInternal::<N>::tee(&obj) as opposed to obj.tee::<N>(). The constraint Self: TeeInternal<N> collapses the potential impl matches to exactly 1, which makes the call to tee_internal() unambiguous. This constraint is also allowed to contain the generic parameter N because it is specified as a constraint to the method (as opposed to a constraint on the trait). I’m honestly quite surprised this works …

Examples

let x = "test".tee::<2>();
assert_eq!(x.0, x.1);
assert_eq!(x.0, "test");

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: Clone> Tee for T