Struct Change

pub struct Change {
    pub adds: HashMap<H256, Vec<u8>>,
    pub removes: HashSet<H256>,
}

Change for a merkle trie operation.

Fields

adds: HashMap<H256, Vec<u8>>

Additions to the database.

removes: HashSet<H256>

Removals to the database.

Implementations

impl Change

pub fn add_raw(&mut self, key: H256, value: Vec<u8>)

Change to add a new raw value.

pub fn add_node<'a, 'b, 'c>(&'a mut self, node: &'c MerkleNode<'b>)

Change to add a new node.

pub fn add_value<'a, 'b, 'c>( &'a mut self, node: &'c MerkleNode<'b>, ) -> MerkleValue<'b>

Change to add a new node, and return the value added.

pub fn remove_raw(&mut self, key: H256)

Change to remove a raw key.

pub fn remove_node<'a, 'b, 'c>(&'a mut self, node: &'c MerkleNode<'b>) -> bool

Change to remove a node. Return whether there’s any node being removed.

pub fn merge(&mut self, other: &Change)

Merge another change to this change.

Trait Implementations

impl Default for Change

fn default() -> Self

Returns the “default value” for a type.