Enum rustc_ast_passes::ast_validation::DisallowTildeConstContext

source · 
enum DisallowTildeConstContext<'a> {
    TraitObject,
    ImplTrait,
    Fn(FnKind<'a>),
}
Expand description

What is the context that prevents using ~const?

Variants

TraitObject

ImplTrait

Fn(FnKind<'a>)

Auto Trait Implementations

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Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 48 bytes

Size for each variant:

  • TraitObject: 0 bytes
  • ImplTrait: 0 bytes
  • Fn: 48 bytes