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by groovy2shoes
4706 days ago
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> most OO languages allow two objects that represent the
> same states to have distinct identities, even if
> compare-by-value claims they're equal.
You can do this in languages that offer only compare-by-value by attaching a unique ID to every object. Of course, you may have to write your own equality relation if you want compare-by-value semantics in addition to compare-by-identity semantics. |
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