Struct EditionId 

pub struct EditionId {
    pub family: &'static str,
    pub year: u16,
    pub month: u8,
    pub version: u8,
}

The identifier of an edition, e.g. core2026.07.0.

The family names an independently versioned, additive group of encodings (core is the set the default writer emits). The date components record when the edition was frozen and order editions chronologically within a family; there is no ordering across families.

Fields

family: &'static str

The edition family, e.g. core.

year: u16

Year the edition was cut.

month: u8

Month the edition was cut.

version: u8

Distinguishes editions cut in the same month; normally 0.

Implementations

impl EditionId

pub const fn new( family: &'static str, year: u16, month: u8, version: u8, ) -> Self

Create an edition identifier. Validated by EditionId::validate, which test_harness::validate_edition exercises per edition in unit tests.

pub fn is_at_or_before(&self, other: &EditionId) -> bool

Returns true if self is the same edition as other or an earlier edition of the same family. Editions of different families are never ordered.

pub fn validate(&self) -> Result<(), EditionError>

Validate the identifier’s form: a non-empty lowercase family, a four-digit year, and a month in 01-12. Checked for every declared edition by EditionSession::validate and per edition by test_harness::validate_edition.

Trait Implementations

impl Clone for EditionId

fn clone(&self) -> EditionId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for EditionId

impl Debug for EditionId

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

Formats the value using the given formatter.

impl Display for EditionId

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

Formats the value using the given formatter.

impl Eq for EditionId

impl PartialEq for EditionId

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for EditionId