Enum protobuf::well_known_types::field::Cardinality

pub enum Cardinality {
    CARDINALITY_UNKNOWN,
    CARDINALITY_OPTIONAL,
    CARDINALITY_REQUIRED,
    CARDINALITY_REPEATED,
}

Whether a field is optional, required, or repeated.

Variants

CARDINALITY_UNKNOWN

CARDINALITY_OPTIONAL

CARDINALITY_REQUIRED

CARDINALITY_REPEATED

Trait Implementations

impl Clone for Cardinality

fn clone(&self) -> Cardinality

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Cardinality

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

Formats the value using the given formatter.

impl Default for Cardinality

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Cardinality

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Hash for Cardinality

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, 

Feeds a slice of this type into the given Hasher.

impl PartialEq<Cardinality> for Cardinality

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl ProtobufEnum for Cardinality

fn value(&self) -> i32

Get enum i32 value.

fn from_i32(value: i32) -> Option<Cardinality>

Try to create an enum from i32 value. Return None if value is unknown.

fn values() -> &'static [Self]

Get all enum values for enum type.

fn enum_descriptor_static() -> EnumDescriptor

Get enum descriptor by type.

fn descriptor(&self) -> EnumValueDescriptor

Get enum value descriptor.

fn enum_descriptor(&self) -> EnumDescriptor

Get enum descriptor.

impl ProtobufValue for Cardinality

type RuntimeType = RuntimeTypeEnum<Self>

Actual implementation of type properties.

fn runtime_type_box() -> RuntimeTypeBox

Dynamic version of the type.

fn as_ref(value: &Self) -> ReflectValueRef<'_>

Pointer to a dynamic reference.

fn as_mut(value: &mut Self) -> ReflectValueMut<'_>

Mutable pointer to a dynamic mutable reference.

fn from_value_box(value_box: ReflectValueBox) -> Result<Self, ReflectValueBox>

Construct a value from given reflective value.

fn set_from_value_box(target: &mut Self, value_box: ReflectValueBox)

Write the value.

fn default_value_ref() -> ReflectValueRef<'static>

Default value for this type.

fn into_static_value_ref(value: Self) -> ReflectValueRef<'static>

Convert a value into a ref value if possible.

fn is_non_zero(value: &Self) -> bool

Value is non-default?

fn cast_to_enum_values(values: &[Self]) -> &[i32]

Cast enum element data to integers.

impl Serialize for Cardinality

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

Serialize this value into the given Serde serializer.

impl Copy for Cardinality

impl Eq for Cardinality

impl StructuralEq for Cardinality

impl StructuralPartialEq for Cardinality