Trait ContainerLen

pub trait ContainerLen {
    // Required method
    fn len(&self) -> usize;
}

A trait to let you see how many values the container is holding.

Required Methods

fn len(&self) -> usize

Returns the number of elements in the container.

Implementations on Foreign Types

impl<I, O> ContainerLen for BTreeMap<I, O>

where I: Ord,

fn len(&self) -> usize

impl<I, O, S> ContainerLen for HashMap<I, O, S>

where I: Eq + Hash, S: BuildHasher,

fn len(&self) -> usize

Implementors