Trait DecisionSpecification 

pub trait DecisionSpecification<T: ?Sized> {
    type Decision;

    // Required method
    fn decide(&self, candidate: &T) -> Option<&Self::Decision>;
}

A rule that selects a typed decision for a candidate.

Required Associated Types

type Decision

The decision selected by this rule.

Required Methods

fn decide(&self, candidate: &T) -> Option<&Self::Decision>

Returns the selected decision, or None when no rule matches.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<T: ?Sized, Decision> DecisionSpecification<T> for FirstMatch<T, Decision>

type Decision = Decision

impl<T: ?Sized, Decision> DecisionSpecification<T> for IndexedFirstMatch<T, Decision>

type Decision = Decision