HashMap[K1, HashMap[K2, V]]
var hm2 = new HashMap2[Int, String, Float]
hm2[1, "one"] = 1.0
hm2[2, "two"] = 2.0
assert hm2[1, "one"] == 1.0
assert hm2[2, "not-two"] == null
more_collections $ HashMap2 :: core_serialize_to
Actual serialization ofself
to serializer
more_collections $ HashMap2 :: from_deserializer
Create an instance of this class from thedeserializer
serialization :: Serializable :: accept_json_serializer
Refinable service to customize the serialization of this class to JSONserialization :: Serializable :: accept_msgpack_attribute_counter
Hook to customize the behavior of theAttributeCounter
serialization :: Serializable :: accept_msgpack_serializer
Hook to customize the serialization of this class to MessagePackserialization :: Serializable :: add_to_bundle
Called by[]=
to dynamically choose the appropriate method according
core :: Object :: class_factory
Implementation used byget_class
to create the specific class.
serialization :: Serializable :: core_serialize_to
Actual serialization ofself
to serializer
core :: Object :: defaultinit
serialization :: Serializable :: from_deserializer
Create an instance of this class from thedeserializer
core :: Object :: is_same_instance
Return true ifself
and other
are the same instance (i.e. same identity).
core :: Object :: is_same_serialized
Isself
the same as other
in a serialization context?
core :: Object :: is_same_type
Return true ifself
and other
have the same dynamic type.
serialization :: Serializable :: msgpack_extra_array_items
Hook to request a larger than usual metadata arraycore :: Object :: output_class_name
Display class name on stdout (debug only).serialization :: Serializable :: serialize_msgpack
Serializeself
to MessagePack bytes
serialization :: Serializable :: serialize_to
Serializeself
to serializer
serialization :: Serializable :: serialize_to_json
Serializeself
to JSON
serialization :: Serializable :: to_pretty_json
Serializeself
to plain pretty JSON
Serializer::serialize
# Simple way to store an `HashMap[K1, HashMap[K2, V]]`
#
# ~~~~
# var hm2 = new HashMap2[Int, String, Float]
# hm2[1, "one"] = 1.0
# hm2[2, "two"] = 2.0
# assert hm2[1, "one"] == 1.0
# assert hm2[2, "not-two"] == null
# ~~~~
class HashMap2[K1, K2, V]
private var level1 = new HashMap[K1, HashMap[K2, V]]
# Return the value associated to the keys `k1` and `k2`.
# Return `null` if no such a value.
fun [](k1: K1, k2: K2): nullable V
do
var level1 = self.level1
var level2 = level1.get_or_null(k1)
if level2 == null then return null
return level2.get_or_null(k2)
end
# Set `v` the value associated to the keys `k1` and `k2`.
fun []=(k1: K1, k2: K2, v: V)
do
var level1 = self.level1
var level2 = level1.get_or_null(k1)
if level2 == null then
level2 = new HashMap[K2, V]
level1[k1] = level2
end
level2[k2] = v
end
# Remove the item at `k1` and `k2`
fun remove_at(k1: K1, k2: K2)
do
var level1 = self.level1
var level2 = level1.get_or_null(k1)
if level2 == null then return
level2.keys.remove(k2)
end
# Is there a value at `k1, k2`?
fun has(k1: K1, k2: K2): Bool
do
if not level1.keys.has(k1) then return false
return level1[k1].keys.has(k2)
end
# Remove all items
fun clear do level1.clear
end
lib/more_collections/more_collections.nit:137,1--190,3