Trait Weighter 

pub trait Weighter<K, V>:
    Fn(&K, &V) -> usize
    + Send
    + Sync
    + 'static { }

The weighter for the in-memory cache.

The weighter is used to calculate the weight of the cache entry.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors

impl<K, V, T> Weighter<K, V> for T

where T: Fn(&K, &V) -> usize + Send + Sync + 'static,