Trait icu_provider::marker::KeyedDataMarker

pub trait KeyedDataMarker: DataMarker {
    const KEY: DataKey;

    // Provided method
    fn bind<P>(provider: P) -> DataProviderWithKey<Self, P>
       where P: DataProvider<Self>,
             Self: Sized { ... }
}

A DataMarker with a DataKey attached.

Structs implementing this trait are normally generated with the data_struct! macro.

Implementing this trait enables this marker to be used with the main DataProvider trait. Most markers should be associated with a specific key and should therefore implement this trait.

BufferMarker and AnyMarker are examples of markers that do not implement this trait because they are not specific to a single key.

Note: KeyedDataMarkers are quasi-const-generic compile-time objects, and as such are expected to be unit structs. As this is not something that can be enforced by the type system, we currently only have a 'static bound on them (which is needed by a lot of our code).

Required Associated Constants

const KEY: DataKey

The single DataKey associated with this marker.

Provided Methods

fn bind<P>(provider: P) -> DataProviderWithKey<Self, P>

where P: DataProvider<Self>, Self: Sized,

Binds this KeyedDataMarker to a provider supporting it.

Object Safety

This trait is not object safe.

Implementors

impl KeyedDataMarker for HelloWorldV1Marker

const KEY: DataKey = _

impl<Y> KeyedDataMarker for NeverMarker<Y>

where for<'a> Y: Yokeable<'a>,

const KEY: DataKey = _