Tab Atkins Jr. (2015-06-02T15:51:47.000Z)
d at domenic.me (2015-06-08T00:00:44.043Z)
Exactly. WeakSet's use-cases are all in the same family as WeakMap, just with a simpler set-up - rather than associating arbitrary data with the object, you just associate "is in this set" with it.