Trait MapValuesExt 

pub trait MapValuesExt<K, V>: MapQuery<Key = K, Value = V>
where
    K: Hash + Eq + CellValue,
    V: CellValue,
{
    // Provided methods
    fn map_values<U, F>(self, f: F) -> MapValuesPlan<Self, K, V, U, F>
       where U: CellValue,
             F: Fn(&K, &V) -> U + Send + Sync + 'static { ... }
    fn filter_map_values<U, F>(
        self,
        f: F,
    ) -> FilterMapValuesPlan<Self, K, V, U, F>
       where U: CellValue,
             F: Fn(&K, &V) -> Option<U> + Send + Sync + 'static { ... }
}

Semantic key-preserving projection operators.

Projection closures must be deterministic, externally side-effect-free, and nonblocking. They may be invoked repeatedly or concurrently; invocation count, order, and thread are not API guarantees.

Provided Methods

fn map_values<U, F>(self, f: F) -> MapValuesPlan<Self, K, V, U, F>

where U: CellValue, F: Fn(&K, &V) -> U + Send + Sync + 'static,

Map every value while retaining its input key.

fn filter_map_values<U, F>(self, f: F) -> FilterMapValuesPlan<Self, K, V, U, F>

where U: CellValue, F: Fn(&K, &V) -> Option<U> + Send + Sync + 'static,

Map or omit a value while retaining its input key.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<K, V, M> MapValuesExt<K, V> for M

where K: Hash + Eq + CellValue, V: CellValue, M: MapQuery<Key = K, Value = V>,