Trait KeyPathsHashMapExt 

pub trait KeyPathsHashMapExt<K, V> {
    // Required methods
    fn map_values_keypath<T, F, R>(
        &self,
        keypath: KeyPaths<V, T>,
        f: F,
    ) -> KeyPathResult<HashMap<K, R>>
       where K: Clone,
             F: Fn(&T) -> R;
    fn filter_values_keypath<T, F>(
        &self,
        keypath: KeyPaths<V, T>,
        predicate: F,
    ) -> KeyPathResult<HashMap<K, V>>
       where K: Clone,
             V: Clone,
             F: Fn(&T) -> bool;
}

Operations for HashMap collections

Required Methods

fn map_values_keypath<T, F, R>( &self, keypath: KeyPaths<V, T>, f: F, ) -> KeyPathResult<HashMap<K, R>>

where K: Clone, F: Fn(&T) -> R,

Transform values using keypath

fn filter_values_keypath<T, F>( &self, keypath: KeyPaths<V, T>, predicate: F, ) -> KeyPathResult<HashMap<K, V>>

where K: Clone, V: Clone, F: Fn(&T) -> bool,

Filter by keypath predicate on values

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<K: Hash + Eq, V: KeyPathsOperable> KeyPathsHashMapExt<K, V> for HashMap<K, V>

fn map_values_keypath<T, F, R>( &self, keypath: KeyPaths<V, T>, f: F, ) -> KeyPathResult<HashMap<K, R>>

where K: Clone, F: Fn(&T) -> R,

fn filter_values_keypath<T, F>( &self, keypath: KeyPaths<V, T>, predicate: F, ) -> KeyPathResult<HashMap<K, V>>

where K: Clone, V: Clone, F: Fn(&T) -> bool,

Implementors