Enum DispatchKey 

pub enum DispatchKey {
    Text(Arc<str>),
    Rational(RationalInteger),
    Date(NaiveDateTime),
    Time(NaiveDateTime),
}

One breakpoint in an ordered dispatch table.

Deliberately implements neither Ord nor PartialOrd. RationalInteger’s Ord panics when the cross-multiplication needed to order two rationals runs out of memory, while evaluation must turn that failure into a veto. Ordering therefore goes through Self::try_compare, which surfaces the failure.

Text stays Arc<str>: planning clones dispatch tables through the cons key, extract_reachable, and PlanView merges, so a shared string is one refcount bump per clone where an owned one is an allocation per clone (measured 10% slower load on the 126000 logistics fixture).

Variants

Text(Arc<str>)

Rational(RationalInteger)

Stored magnitude of a number, ratio or measure. Measure magnitudes are held in canonical base-unit space, which is why one key covers all three.

Date(NaiveDateTime)

Time(NaiveDateTime)

Trait Implementations

impl Clone for DispatchKey

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DispatchKey

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

Formats the value using the given formatter.

impl Eq for DispatchKey

impl Hash for DispatchKey

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for DispatchKey

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DispatchKey