pub struct FatDBMut<'db, L> where
    L: TrieLayout
{ /* private fields */ }
Expand description

A mutable Trie implementation which hashes keys and uses a generic HashDB backing database. Additionaly it stores inserted hash-key mappings for later retrieval.

Use it as a Trie or TrieMut trait object.

Implementations

Create a new trie with the backing database db and empty root Initialise to the state entailed by the genesis block. This guarantees the trie is built correctly.

Create a new trie with the backing database db and root.

Returns an error if root does not exist.

Get the backing database.

Get the backing database.

Trait Implementations

Return the root of the trie.

Is the trie empty?

Does the trie contain a given key?

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. Read more

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. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.