# limitations under the License.
# Highly specific, but useful, collections-related classes.
-module more_collections
+module more_collections is serialize
+
+import serialization
# Simple way to store an `HashMap[K, Array[V]]`
#
# 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`.
# assert hm3[2, "not-two", 22] == null
# ~~~~
class HashMap3[K1, K2, K3, V]
+
private var level1 = new HashMap[K1, HashMap2[K2, K3, V]]
# Return the value associated to the keys `k1`, `k2`, and `k3`.