Skip to main content

NullableRepresentation

rust_spec::niche

Trait NullableRepresentation 

Source 
pub trait NullableRepresentation: Sealed {
    type Layout: LayoutKind;
    type Trap;
    type Niche;
}
Expand description

Representation contributions when adding an empty alternative to a payload.

Add Layout to the payload layout and Trap to its indirect trap classification. Niche describes the resulting nullable representation.

Required Associated Types§

Source

type Layout: LayoutKind

Source

type Trap

Source

type Niche

Dyn Compatibility§

This trait is dyn compatible.

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

Implementors§