A Map which accepts multiple objects as a key.
Map implementation using N-tuples as multi-dimensional keys.
<!-- TupleMapはほとんどES6のMapと同じですが、tupleをキーに持つことができます。 --> TupleMap is almost same as a ES6's Map, but it can have tuples as its keys.
A Map of limited size that keeps most recently used values
An efficient memoizer for functions that only receive immutable arguments. Ideal for Redux and similar environments.
A simple way to map a tuple to some value
ES6 Map where keys are 2-tuples