Enum OptionalBoundKind 

pub enum OptionalBoundKind {
    Unbounded,
    InitNone,
    Bounded,
}

Variants

Unbounded

InitNone

The optional starts out null, but once it becomes non-null it will remain non-null forever (though the non-null value may change arbitrarily). Erases to BoundKind::Unbounded.

Bounded

Trait Implementations

impl Clone for OptionalBoundKind

fn clone(&self) -> OptionalBoundKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OptionalBoundKind

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

Formats the value using the given formatter.

impl Eq for OptionalBoundKind

impl PartialEq for OptionalBoundKind

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for OptionalBoundKind

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for OptionalBoundKind