Enum prost_types::field::Cardinality
source · #[repr(i32)]
pub enum Cardinality {
Unknown,
Optional,
Required,
Repeated,
}
Expand description
Whether a field is optional, required, or repeated.
Variants§
Unknown
For fields with unknown cardinality.
Optional
For optional fields.
Required
For required fields. Proto2 syntax only.
Repeated
For repeated fields.
Implementations§
source§impl Cardinality
impl Cardinality
source§impl Cardinality
impl Cardinality
sourcepub fn as_str_name(&self) -> &'static str
pub fn as_str_name(&self) -> &'static str
String value of the enum field names used in the ProtoBuf definition.
The values are not transformed in any way and thus are considered stable (if the ProtoBuf definition does not change) and safe for programmatic use.
sourcepub fn from_str_name(value: &str) -> Option<Self>
pub fn from_str_name(value: &str) -> Option<Self>
Creates an enum from field names used in the ProtoBuf definition.
Trait Implementations§
source§impl Clone for Cardinality
impl Clone for Cardinality
source§fn clone(&self) -> Cardinality
fn clone(&self) -> Cardinality
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for Cardinality
impl Debug for Cardinality
source§impl Default for Cardinality
impl Default for Cardinality
source§fn default() -> Cardinality
fn default() -> Cardinality
Returns the “default value” for a type. Read more
source§impl From<Cardinality> for i32
impl From<Cardinality> for i32
source§fn from(value: Cardinality) -> i32
fn from(value: Cardinality) -> i32
Converts to this type from the input type.
source§impl Hash for Cardinality
impl Hash for Cardinality
source§impl Ord for Cardinality
impl Ord for Cardinality
source§fn cmp(&self, other: &Cardinality) -> Ordering
fn cmp(&self, other: &Cardinality) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
Compares and returns the maximum of two values. Read more
source§impl PartialEq<Cardinality> for Cardinality
impl PartialEq<Cardinality> for Cardinality
source§fn eq(&self, other: &Cardinality) -> bool
fn eq(&self, other: &Cardinality) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<Cardinality> for Cardinality
impl PartialOrd<Cardinality> for Cardinality
source§fn partial_cmp(&self, other: &Cardinality) -> Option<Ordering>
fn partial_cmp(&self, other: &Cardinality) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self
and other
) and is used by the <=
operator. Read more