5 ms·

For JS, implement a Map data structure that is keyed by the value (not identity) of arbitrary objects.

• xiphias2 8y ago
  After I implemented this and compared with just encoding the key with JSON, it turned out that JSON.stringify is so fast, that it's not really worth the effort.
  • univerio 8y ago
    Unfortunately JSON.stringify makes no guarantees about the order of keys in an Object, so that can break in subtle ways.
    • xiphias2 8y ago
      Aha, that's true. I wasn't using hash maps when I did this, but what you write makes sense.
  • deleted 8y ago
    [deleted]
• deleted 8y ago
  [deleted]