Struct SecondaryIndexRegistry 

pub struct SecondaryIndexRegistry { /* private fields */ }

Deterministically ordered runtime definitions supplied when opening an indexed map.

Implementations

impl SecondaryIndexRegistry

pub fn new() -> Self

Create an empty registry.

pub fn register(self, index: SecondaryIndex) -> Result<Self, Error>

Register one definition, rejecting duplicate logical names.

pub fn get(&self, name: &[u8]) -> Option<&SecondaryIndex>

Borrow a definition by its exact raw name.

pub fn iter(&self) -> impl ExactSizeIterator<Item = &SecondaryIndex>

Iterate definitions in raw-name order.

pub fn len(&self) -> usize

Number of definitions in the registry.

pub fn is_empty(&self) -> bool

Whether the registry contains no definitions.

Trait Implementations

impl Clone for SecondaryIndexRegistry

fn clone(&self) -> SecondaryIndexRegistry

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SecondaryIndexRegistry

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SecondaryIndexRegistry

fn default() -> SecondaryIndexRegistry

Returns the “default value” for a type.