Enum Cardinality 

pub enum Cardinality {
    Mandatory,
    Required,
    Dependent,
    Optional,
    NotUsed,
    Conditional,
}

Cardinality of a segment or group in the MIG.

Variants

Mandatory

Mandatory (M) — must appear exactly once or as specified.

Required

Required (R) — must appear.

Dependent

Dependent (D) — depends on other segments.

Optional

Optional (O) — may appear.

NotUsed

Not used (N) — must not appear.

Conditional

Conditional (C) — conditional on context.

Implementations

impl Cardinality

pub fn from_status(status: &str) -> Self

Parse from a status string (e.g., “M”, “C”, “R”, “D”, “O”, “N”).

pub fn is_required(&self) -> bool

Whether this cardinality means the element is required.

Trait Implementations

impl Clone for Cardinality

fn clone(&self) -> Cardinality

Returns a duplicate 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<'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 PartialEq for Cardinality

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

impl StructuralPartialEq for Cardinality