Struct DiskMap

pub struct DiskMap<K, V> { /* private fields */ }

A map store on hard disk

Arguments

• K: key must can represent as &[u8]
• V: value must implement Serialize + Deserialize

Examples

use disk_map::DiskMap;

Implementations

impl<K, V> DiskMap<K, V>

where K: AsRef<[u8]>, V: Serialize + DeserializeOwned,

pub fn is_empty(&self) -> bool

Check if the map contains no elements.

pub fn get<Q>(&self, key: Q) -> Option<V>

where Q: Borrow<K>,

Get the value by key name, return None if no such key

pub fn try_get(&self, key: &[u8]) -> Result<V, DiskMapError>

Raw api of DiskMap::get

pub fn insert<Q>(&self, key: Q, value: V) -> Option<V>

where K: From<Q>,

Insert the value by key name, return None if no such key

pub fn try_insert(&self, key: &[u8], value: V) -> Result<V, DiskMapError>

Raw api of DiskMap::insert

Trait Implementations

impl<K, V> Drop for DiskMap<K, V>

fn drop(&mut self)

Executes the destructor for this type.

impl<K, V> From<Tree> for DiskMap<K, V>

fn from(value: Tree) -> Self

Converts to this type from the input type.