Trait tor_netdir::UpcastArcNetDirProvider

source · 
pub trait UpcastArcNetDirProvider {
    // Required method
    fn upcast_arc<'a>(self: Arc<Self>) -> Arc<dyn NetDirProvider + 'a>
       where Self: 'a;
}
Expand description

Helper trait: allows any Arc<X> to be upcast to a Arc<dyn NetDirProvider> if X is an implementation or supertrait of NetDirProvider.

This trait exists to work around a limitation in rust: when trait upcasting coercion is stable, this will be unnecessary.

The Rust tracking issue is https://github.com/rust-lang/rust/issues/65991.

Required Methods§

source

fn upcast_arc<'a>(self: Arc<Self>) -> Arc<dyn NetDirProvider + 'a>
where Self: 'a,

Return a view of this object as an Arc<dyn NetDirProvider>

Implementors§