Enum Mutability 

pub enum Mutability {
    Const,
    Var,
}

Indicator of whether a global value, struct’s field, or array type’s elements are mutable or not.

Variants

Const

The global value, struct field, or array elements are constant and the value does not change.

Var

The value of the global, struct field, or array elements can change over time.

Implementations

impl Mutability

pub fn is_const(&self) -> bool

Available on crate feature runtime only.

Is this constant?

pub fn is_var(&self) -> bool

Available on crate feature runtime only.

Is this variable?

Trait Implementations

impl Clone for Mutability

Available on crate feature runtime only.

fn clone(&self) -> Mutability

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Mutability

Available on crate feature runtime only.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for Mutability

Available on crate feature runtime only.

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Mutability

Available on crate feature runtime only.

fn eq(&self, other: &Mutability) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Mutability

Available on crate feature runtime only.

impl Eq for Mutability

Available on crate feature runtime only.

impl StructuralPartialEq for Mutability

Available on crate feature runtime only.