Struct dst_init::CoercionInitializer

pub struct CoercionInitializer<T: Unsize<U>, U: ?Sized> { /* private fields */ }

An Emplace Initializer for dyn or [T] types, created by concrete type T or [T;N]. For example usize is sized type and implemented Debug:

 use std::fmt::Debug;
 use dst_init::{BoxExt, CoercionInitializer};

 let init:CoercionInitializer<usize,dyn Debug> = CoercionInitializer::new(1usize);
 let boxed:Box<dyn Debug> = Box::emplace(init);
 assert_eq!(format!("{:?}",boxed),"1")

Implementations

impl<T: Unsize<U>, U: ?Sized> CoercionInitializer<T, U>

pub fn new(t: T) -> Self

pub fn fallback(self) -> T

Trait Implementations

impl<T: Unsize<U>, U: ?Sized> EmplaceInitializer for CoercionInitializer<T, U>

type Output = U

fn layout(&mut self) -> Layout

Layout of the type

fn emplace(self, ptr: NonNull<u8>) -> NonNull<Self::Output>

Emplace the type in given memory