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by mrkeen
1309 days ago
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> Does it end up creating new objects every time for e.g. a map is called like in this example to update all the attributes? No. This is optimised away. It's yet another reason why it's frustrating to see FP-like things bolted onto mainstream imperative stuff. You can't optimise away 'mostly functional' code. Wrapping a Set with an UnmodifiableSet isn't the same thing as (f x) + (f x) == 2 * (f x) |
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