Trait EntryExt

Source
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§

Source

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.

Implementations on Foreign Types§

Source§

impl<'a, K: 'a, V: 'a> EntryExt<'a, K, V> for Entry<'a, K, V>

Source§

fn or_insert_with_fallible<E, F: FnOnce() -> Result<V, E>>( self, default: F, ) -> Result<&'a mut V, E>

Source§

impl<'a, K: Ord + 'a, V: 'a> EntryExt<'a, K, V> for Entry<'a, K, V>

Source§

fn or_insert_with_fallible<E, F: FnOnce() -> Result<V, E>>( self, default: F, ) -> Result<&'a mut V, E>

Implementors§