Trait Length 

pub trait Length {
    // Required methods
    fn count_some(&self) -> usize;
    fn count(&self) -> usize;
}

Determine number of non-None elements

Required Methods

fn count_some(&self) -> usize

Return number of non-None elements in the data structure

fn count(&self) -> usize

Return number of all elements in the data structure, including None

Dyn Compatibility

This trait is dyn compatible.

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

Implementations on Foreign Types

impl Length for DataContract

fn count_some(&self) -> usize

fn count(&self) -> usize

impl Length for Document

fn count_some(&self) -> usize

fn count(&self) -> usize

impl Length for IdentitiesContractKeys

fn count_some(&self) -> usize

fn count(&self) -> usize

impl Length for Identity

fn count_some(&self) -> usize

fn count(&self) -> usize

impl<K, T> Length for BTreeMap<K, Option<T>>

fn count_some(&self) -> usize

fn count(&self) -> usize

impl<K, T> Length for Vec<(K, Option<T>)>

fn count_some(&self) -> usize

fn count(&self) -> usize

impl<T: Length> Length for Option<T>

fn count_some(&self) -> usize

fn count(&self) -> usize

impl<T> Length for Vec<Option<T>>

fn count_some(&self) -> usize

fn count(&self) -> usize

Implementors

impl Length for Contenders

impl Length for ContestedResources

impl Length for DataContractHistory

impl Length for DocumentHistory

impl Length for IdentityBalance

impl Length for IdentityBalanceAndRevision

impl Length for VotePollsGroupedByTimestamp

impl Length for Voters

impl<K, T> Length for IndexMap<K, Option<T>>