Struct OrderingBuilder 

pub struct OrderingBuilder { /* private fields */ }

A builder that accumulates multiple comparison results and returns the first non-Equal one.

Implementations

impl OrderingBuilder

pub fn new() -> Self

Begin a new builder (starts as Equal).

pub fn then(self, next: Ordering) -> Self

Add another comparison step.

pub fn then_with<F: FnOnce() -> Ordering>(self, f: F) -> Self

Add a lazily-evaluated step.

pub fn field<T: Ord>(self, a: &T, b: &T) -> Self

Add a field comparison.

pub fn build(self) -> Ordering

Finalise and return the accumulated ordering.

Trait Implementations

impl Clone for OrderingBuilder

fn clone(&self) -> OrderingBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OrderingBuilder

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

Formats the value using the given formatter.

impl Default for OrderingBuilder

fn default() -> Self

Returns the “default value” for a type.