Trait trie_db::TrieMut[][src]

pub trait TrieMut<L: TrieLayout> {
    fn root(&mut self) -> &TrieHash<L>;
fn is_empty(&self) -> bool;
fn get<'a, 'key>(
        &'a self,
        key: &'key [u8]
    ) -> Result<Option<DBValue>, TrieHash<L>, CError<L>>
    where
        'a: 'key
;
fn insert(
        &mut self,
        key: &[u8],
        value: &[u8]
    ) -> Result<Option<DBValue>, TrieHash<L>, CError<L>>;
fn remove(
        &mut self,
        key: &[u8]
    ) -> Result<Option<DBValue>, TrieHash<L>, CError<L>>; fn contains(&self, key: &[u8]) -> Result<bool, TrieHash<L>, CError<L>> { ... } }
Expand description

A key-value datastore implemented as a database-backed modified Merkle tree.

Required methods

Return the root of the trie.

Is the trie empty?

What is the value of the given key in this trie?

Insert a key/value pair into the trie. An empty value is equivalent to removing key from the trie. Returns the old value associated with this key, if it existed.

Remove a key from the trie. Equivalent to making it equal to the empty value. Returns the old value associated with this key, if it existed.

Provided methods

Does the trie contain a given key?

Implementors