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ZeroablePrimitive in std::num - Rust
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Trait ZeroablePrimitive

Source
pub unsafe trait ZeroablePrimitive:
    Sized
    + Copy
    + Sealed { }
๐Ÿ”ฌThis is a nightly-only experimental API. (nonzero_internals)
Expand description

A marker trait for primitive types which can be zero.

This is an implementation detail for NonZero<T> which may disappear or be replaced at any time.

ยงSafety

Types implementing this trait must be primitives that are valid when zeroed.

The associated Self::NonZeroInner type must have the same size+align as Self, but with a niche and bit validity making it so the following transmutes are sound:

  • Self::NonZeroInner to Option<Self::NonZeroInner>
  • Option<Self::NonZeroInner> to Self

(And, consequently, Self::NonZeroInner to Self.)

Dyn Compatibilityยง

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementorsยง