Let's say I have a massive String, so hashing it is fairly expensive.
When does the hashValue gets computed? Every time I access it as words.hashValue, or every time the String gets modified? If it's on access, is it cached?
When is hashValue in swift computed?
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As the docs on
hashValuestate, that requirement onHashableis deprecated, you should be usinghash(into:)instead, which should only be called when you are storing theStringas aHashable, by using it as aDictionarykey or in aSet.For more info, see SE-0206 Hashable enhancements.