pub trait EntryExt<'a, K: 'a, V: 'a> {
// Required method
fn or_insert_with_fallible<E, F: FnOnce() -> Result<V, E>>(
self,
default: F,
) -> Result<&'a mut V, E>;
}
Expand description
Trait to add helper methods on map-like entry types.
Required Methods§
fn or_insert_with_fallible<E, F: FnOnce() -> Result<V, E>>( self, default: F, ) -> Result<&'a mut V, E>
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.