Enum serde_protobuf::descriptor::FieldLabel

pub enum FieldLabel {
    Optional,
    Required,
    Repeated,
}

A label that a field can be given to indicate its cardinality.

Variants

Optional

There can be zero or one value.

Required

There must be exactly one value.

Repeated

There can be any number of values.

Implementations

impl FieldLabel

pub fn from_proto(proto: Label) -> FieldLabel

Converts a proto field label into a native field label.

pub fn is_repeated(self) -> bool

Whether the label is repeated.

Trait Implementations

impl Clone for FieldLabel

fn clone(&self) -> FieldLabel

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FieldLabel

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

Formats the value using the given formatter.

impl PartialEq<FieldLabel> for FieldLabel

fn eq(&self, other: &FieldLabel) -> 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 Copy for FieldLabel

impl Eq for FieldLabel

impl StructuralEq for FieldLabel

impl StructuralPartialEq for FieldLabel