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Start your free trialVansh Agarwal
Courses Plus Student 3,965 Points== static method
When calling the == static method(which conforms to the Equatable protocol), why don't we have to call it like a normal method? Eg: Instead of saying something like Item.==(lhs: Item(quatity: 2, price: 3), rhs: Item(quatity: 3, price: 4) why can say Item(quatity: 2, price: 3) == Item(quatity: 3, price: 4) *both of these to return a boolean value
I really hope you have understood my question. If not you can just ask me for more clarity.
1 Answer
eirikvaa
18,015 PointsCorrect me if I'm wrong, but operators in Swift are implemented in such a way that you can define your own. Operators can either be prefix, infix or postfix. If you don't specify anything, they default to infix. The ==
operator is an infix operator, because it appears between two operands, like value1 == value2
. I guess the answer to your question is that you can't write Item.==(lhs:Item1, rhs:Item2)
is because the ==
operator isn't a method that takes arguments, but rather an operator that needs operands.
Vansh Agarwal
Courses Plus Student 3,965 PointsVansh Agarwal
Courses Plus Student 3,965 PointsBut in the video it is shown that == is a method