Trait Entry

pub trait Entry<'a>: RawEntry<'a> {
    // Required methods
    fn or_insert(self, value: Self::Value) -> &'a mut Self::Value;
    fn or_insert_with<F>(self, f: F) -> &'a mut Self::Value
       where F: FnOnce() -> Self::Value;
}

The Entry trait extends the RawEntry trait to provide additional methods for

Required Methods

fn or_insert(self, value: Self::Value) -> &'a mut Self::Value

if the entry is vacant, insert the given value

fn or_insert_with<F>(self, f: F) -> &'a mut Self::Value

where F: FnOnce() -> Self::Value,

if the entry does not exist, insert the value returned by the provided function and return a mutable reference to it.

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

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

where K: Ord,

fn or_insert(self, default: Self::Value) -> &'a mut Self::Value

fn or_insert_with<F>(self, f: F) -> &'a mut Self::Value

where F: FnOnce() -> Self::Value,

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

where K: Eq + Hash,

fn or_insert(self, default: Self::Value) -> &'a mut Self::Value

fn or_insert_with<F>(self, f: F) -> &'a mut Self::Value

where F: FnOnce() -> Self::Value,

Implementors