Struct SpezEmpty 

pub struct SpezEmpty<T: ?Sized>(/* private fields */);

A wrapper type used for auto-deref specialization.

This struct is a core part of the auto-deref-based specialization technique which allows conditionally implementing functionality based on what traits a type implements, without requiring the unstable specialization feature.

Unlike Spez, SpezEmpty wraps a type instead of a value. It is used in conjunction with trait implementations that leverage Rust’s method resolution rules to select different implementations based on available traits.

Implementations

impl<T: ?Sized> SpezEmpty<T>

pub const SPEZ: Self

An instance of SpezEmpty.

Trait Implementations

impl<T: ?Sized> SpezDefaultInPlaceNo for SpezEmpty<T>

unsafe fn spez_default_in_place(&self, _target: PtrUninit) -> PtrMut

Fallback implementation when the type doesn’t implement Default.

impl<T: Default> SpezDefaultInPlaceYes for &SpezEmpty<T>

unsafe fn spez_default_in_place(&self, target: PtrUninit) -> PtrMut

Creates a default value for the inner type in place.

impl<T: ?Sized> SpezParseNo for SpezEmpty<T>

unsafe fn spez_parse( &self, _s: &str, _target: PtrUninit, ) -> Result<PtrMut, ParseError>

Fallback implementation when the type doesn’t implement FromStr.

impl<T: FromStr> SpezParseYes for &SpezEmpty<T>

unsafe fn spez_parse( &self, s: &str, target: PtrUninit, ) -> Result<PtrMut, ParseError>

Parses a string slice into the inner type.