Simple way to store an HashMap[K1, HashMap[K2, HashMap[K3, HashMap[K4, V]]]]

var hm4 = new HashMap4[Int, String, Int, String, Float]
hm4[1, "one", 11, "un"] = 1.0
hm4[2, "two", 22, "deux"] = 2.0
assert hm4[1, "one", 11, "un"] == 1.0
assert hm4[2, "not-two", 22, "deux"] == null

Introduced properties

fun [](k1: K1, k2: K2, k3: K3, k4: K4): nullable V

more_collections :: HashMap4 :: []

Return the value associated to the keys k1, k2, k3 and k4.
fun []=(k1: K1, k2: K2, k3: K3, k4: K4, v: V)

more_collections :: HashMap4 :: []=

Set v the value associated to the keys k1, k2, k3 and k4.
fun clear

more_collections :: HashMap4 :: clear

Remove all items
fun has(k1: K1, k2: K2, k3: K3, k4: K4): Bool

more_collections :: HashMap4 :: has

Is there a value at k1, k2, k3, k4?
fun remove_at(k1: K1, k2: K2, k3: K3, k4: K4)

more_collections :: HashMap4 :: remove_at

Remove the item at k1, k2, k3 and k4

Redefined properties

redef type SELF: HashMap4[K1, K2, K3, K4, V]

more_collections $ HashMap4 :: SELF

Type of this instance, automatically specialized in every class
redef fun core_serialize_to(v: Serializer)

more_collections $ HashMap4 :: core_serialize_to

Actual serialization of self to serializer
redef init from_deserializer(v: Deserializer)

more_collections $ HashMap4 :: from_deserializer

Create an instance of this class from the deserializer

All properties

fun !=(other: nullable Object): Bool

core :: Object :: !=

Have self and other different values?
fun ==(other: nullable Object): Bool

core :: Object :: ==

Have self and other the same value?
type CLASS: Class[SELF]

core :: Object :: CLASS

The type of the class of self.
type SELF: Object

core :: Object :: SELF

Type of this instance, automatically specialized in every class
fun [](k1: K1, k2: K2, k3: K3, k4: K4): nullable V

more_collections :: HashMap4 :: []

Return the value associated to the keys k1, k2, k3 and k4.
fun []=(k1: K1, k2: K2, k3: K3, k4: K4, v: V)

more_collections :: HashMap4 :: []=

Set v the value associated to the keys k1, k2, k3 and k4.
protected fun accept_json_serializer(v: JsonSerializer)

serialization :: Serializable :: accept_json_serializer

Refinable service to customize the serialization of this class to JSON
protected fun accept_msgpack_attribute_counter(v: AttributeCounter)

serialization :: Serializable :: accept_msgpack_attribute_counter

Hook to customize the behavior of the AttributeCounter
protected fun accept_msgpack_serializer(v: MsgPackSerializer)

serialization :: Serializable :: accept_msgpack_serializer

Hook to customize the serialization of this class to MessagePack
protected fun add_to_bundle(bundle: NativeBundle, key: JavaString)

serialization :: Serializable :: add_to_bundle

Called by []= to dynamically choose the appropriate method according
protected fun class_factory(name: String): CLASS

core :: Object :: class_factory

Implementation used by get_class to create the specific class.
fun class_name: String

core :: Object :: class_name

The class name of the object.
fun clear

more_collections :: HashMap4 :: clear

Remove all items
fun core_serialize_to(serializer: Serializer)

serialization :: Serializable :: core_serialize_to

Actual serialization of self to serializer
init from_deserializer(deserializer: Deserializer)

serialization :: Serializable :: from_deserializer

Create an instance of this class from the deserializer
fun get_class: CLASS

core :: Object :: get_class

The meta-object representing the dynamic type of self.
fun has(k1: K1, k2: K2, k3: K3, k4: K4): Bool

more_collections :: HashMap4 :: has

Is there a value at k1, k2, k3, k4?
fun hash: Int

core :: Object :: hash

The hash code of the object.
init init

core :: Object :: init

fun inspect: String

core :: Object :: inspect

Developer readable representation of self.
protected fun inspect_head: String

core :: Object :: inspect_head

Return "CLASSNAME:#OBJECTID".
intern fun is_same_instance(other: nullable Object): Bool

core :: Object :: is_same_instance

Return true if self and other are the same instance (i.e. same identity).
fun is_same_serialized(other: nullable Object): Bool

core :: Object :: is_same_serialized

Is self the same as other in a serialization context?
intern fun is_same_type(other: Object): Bool

core :: Object :: is_same_type

Return true if self and other have the same dynamic type.
protected fun msgpack_extra_array_items: Int

serialization :: Serializable :: msgpack_extra_array_items

Hook to request a larger than usual metadata array
intern fun object_id: Int

core :: Object :: object_id

An internal hash code for the object based on its identity.
fun output

core :: Object :: output

Display self on stdout (debug only).
intern fun output_class_name

core :: Object :: output_class_name

Display class name on stdout (debug only).
fun remove_at(k1: K1, k2: K2, k3: K3, k4: K4)

more_collections :: HashMap4 :: remove_at

Remove the item at k1, k2, k3 and k4
fun serialization_hash: Int

core :: Object :: serialization_hash

Hash value use for serialization
fun serialize_msgpack(plain: nullable Bool): Bytes

serialization :: Serializable :: serialize_msgpack

Serialize self to MessagePack bytes
fun serialize_to(serializer: Serializer)

serialization :: Serializable :: serialize_to

Serialize self to serializer
fun serialize_to_json(plain: nullable Bool, pretty: nullable Bool): String

serialization :: Serializable :: serialize_to_json

Serialize self to JSON
intern fun sys: Sys

core :: Object :: sys

Return the global sys object, the only instance of the Sys class.
fun to_json: String

serialization :: Serializable :: to_json

Serialize self to plain JSON
abstract fun to_jvalue(env: JniEnv): JValue

core :: Object :: to_jvalue

fun to_pretty_json: String

serialization :: Serializable :: to_pretty_json

Serialize self to plain pretty JSON
fun to_s: String

core :: Object :: to_s

User readable representation of self.
package_diagram more_collections::HashMap4 HashMap4 serialization::Serializable Serializable more_collections::HashMap4->serialization::Serializable core::Object Object serialization::Serializable->core::Object ...core::Object ... ...core::Object->core::Object

Ancestors

interface Object

core :: Object

The root of the class hierarchy.

Parents

interface Serializable

serialization :: Serializable

Instances of this class can be passed to Serializer::serialize

Class definitions

more_collections $ HashMap4
# Simple way to store an `HashMap[K1, HashMap[K2, HashMap[K3, HashMap[K4, V]]]]`
#
# ~~~~
# var hm4 = new HashMap4[Int, String, Int, String, Float]
# hm4[1, "one", 11, "un"] = 1.0
# hm4[2, "two", 22, "deux"] = 2.0
# assert hm4[1, "one", 11, "un"] == 1.0
# assert hm4[2, "not-two", 22, "deux"] == null
# ~~~~
class HashMap4[K1, K2, K3, K4, V]

	private var level1 = new HashMap[K1, HashMap3[K2, K3, K4, V]]

	# Return the value associated to the keys `k1`, `k2`, `k3` and `k4`.
	# Return `null` if no such a value.
	fun [](k1: K1, k2: K2, k3: K3, k4: K4): nullable V
	do
		var level1 = self.level1
		var level2 = level1.get_or_null(k1)
		if level2 == null then return null
		return level2[k2, k3, k4]
	end

	# Set `v` the value associated to the keys `k1`, `k2`, `k3` and `k4`.
	fun []=(k1: K1, k2: K2, k3: K3, k4: K4, v: V)
	do
		var level1 = self.level1
		var level2 = level1.get_or_null(k1)
		if level2 == null then
			level2 = new HashMap3[K2, K3, K4, V]
			level1[k1] = level2
		end
		level2[k2, k3, k4] = v
	end

	# Remove the item at `k1`, `k2`, `k3` and `k4`
	fun remove_at(k1: K1, k2: K2, k3: K3, k4: K4)
	do
		var level1 = self.level1
		var level2 = level1.get_or_null(k1)
		if level2 == null then return
		level2.remove_at(k2, k3, k4)
	end

	# Is there a value at `k1, k2, k3, k4`?
	fun has(k1: K1, k2: K2, k3: K3, k4: K4): Bool
	do
		if not level1.keys.has(k1) then return false
		return level1[k1].has(k2, k3, k4)
	end

	# Remove all items
	fun clear do level1.clear
end
lib/more_collections/more_collections.nit:247,1--300,3