Hash

A Hash object that is immutable with time travelling features.

immutable

class Hash (

K

V

) {

alias Value = Nullable!V;

this(V[K] data);

auto insert(K key, V value);

Value opIndex(K key);

auto rollBack();

auto remove(K key);

V[] values();

int opApply(int delegate(K key, V value) dg);

auto compact();

}

Constructors

this this(V[K] data): Initialize a hash with data from a standard hash

Members

Aliases

Value alias Value = Nullable!V: Undocumented in source.

Functions

compact auto compact(): Compacts the storage hash to speed up lookups.
insert auto insert(K key, V value): Create a new hash with the passed in value set.
keys K[] keys(): Returns all the keys in the hash which have a non null value.
opApply int opApply(int delegate(K key, V value) dg): Makes foreach work on this class.
opIndex Value opIndex(K key): Fetch a value from the hash. Raise an error if the key does not exist in the hash.
purge auto purge(): Purge the previous version from history.
remove auto remove(K key): Returns an updated hash with a key value removed from the hash.
rollBack auto rollBack(): Return the previous state of the hash.
values V[] values(): Returns an array of all the values in the hash.

Meta

Source

See Implementation

marty hash classes

Hash