Trait TypedMapStrategy 

pub trait TypedMapStrategy: Sealed {
    type ValueBase;

    // Required methods
    fn downcast_ref<R>(stored: &Self::ValueBase) -> Option<&R>
       where R: 'static;
    fn downcast_mut<R>(stored: &mut Self::ValueBase) -> Option<&mut R>
       where R: 'static;
}

Required Associated Types

type ValueBase

Required Methods

fn downcast_ref<R>(stored: &Self::ValueBase) -> Option<&R>

where R: 'static,

fn downcast_mut<R>(stored: &mut Self::ValueBase) -> Option<&mut R>

where R: 'static,

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors

impl TypedMapStrategy for DefaultStrategy

type ValueBase = Box<dyn Any>

impl TypedMapStrategy for SendStrategy

type ValueBase = Box<dyn Any + Send>

impl TypedMapStrategy for SendSyncStrategy

type ValueBase = Box<dyn Any + Send + Sync>