(Map|Set|WeakMap)#set() returns `this` ?

Andrea Giammarchi andrea.giammarchi at gmail.com
Wed Dec 5 11:08:15 PST 2012

forgot latter comparison with an unknown value

get the value
  void: var v = generate(); map.set(key, v); return v;
  this: return map.set(key, generate()).get(key);
  value: return map.set(key, generate());

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