On Saturday, 29 February 2020 at 21:56:51 UTC, Ali Çehreli wrote:
Because you mentioned canFind, I think you want the semantics to be "is there an element with this value." If so, it would be confusing to use the same operator for two different things: For associative arrays, it means "is there an element accessible with this key."
Does it? I always viewed it as "is this value in list of keys"
Unless 'in' works with arrays to mean "is this index valid", then I don't see the benefit. If we had it, I think more people would ask "why does 'in' work differently for arrays?" Are there other languages that support this semantic? Checking... Ok, Python has it, highly likely because they don't have arrays to begin with.
Well, Python lists are for most purposes equivalent to arrays and it hasn't really been confusing for people.
