Trait MetadataExt 

pub trait MetadataExt {
    type Meta: Clone + Debug + Send + Sync + 'static;

    // Required methods
    fn metadata(&self) -> Option<&Self::Meta>;
    fn metadata_mut(&mut self) -> Option<&mut Self::Meta>;
    fn set_metadata(&mut self, meta: Self::Meta);
}

Trait for types that can carry metadata.

Required Associated Types

type Meta: Clone + Debug + Send + Sync + 'static

Required Methods

fn metadata(&self) -> Option<&Self::Meta>

fn metadata_mut(&mut self) -> Option<&mut Self::Meta>

fn set_metadata(&mut self, meta: Self::Meta)

Dyn Compatibility

This trait is dyn compatible.

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

Implementors

impl<T, M> MetadataExt for MetaAttached<T, M>

where M: Clone + Debug + Send + Sync + 'static,

type Meta = M