Trait CloseValueRef 

pub trait CloseValueRef: Sealed {
    type Closed;

    // Required method
    fn close_ref(&self) -> Self::Closed;
}

Close a value without taking ownership

This trait is meant to be used for CloseValue impls for smart-pointer-like types, as in

use metrique::{CloseValue, CloseValueRef};

struct Smaht<T>(T);

impl<T: CloseValueRef> CloseValue for &'_ Smaht<T> {
    type Closed = T::Closed;
    fn close(self) -> T::Closed { self.0.close_ref() }
}

impl<T: CloseValueRef> CloseValue for Smaht<T> {
    type Closed = T::Closed;
    fn close(self) -> T::Closed { self.0.close_ref() }
}

This trait is not to be implemented or called directly. It mostly exists because it makes trait inference a bit smarter (it’s also not a full trait alias due to trait inference reasons).

Required Associated Types

type Closed

The type produced by closing this value

Required Methods

fn close_ref(&self) -> Self::Closed

Close the value

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<C, T> CloseValueRef for T

where for<'a> &'a Self: CloseValue<Closed = C>,

type Closed = C