Compare arrays in swift

Question

Trying to understand how swift compares arrays.

var myArray1 : [String] = [\"1\",\"2\",\"3\",\"4\",\"5\"]
var myArray2 : [String] = [\"1\",\"2\",\"3\",\"4\",         


        

Answer 1

Arrays conform to Equatable in Swift 4.1, negating the caveats mentioned in previous answers. This is available in Xcode 9.3.

https://swift.org/blog/conditional-conformance/

But just because they implemented == did not mean Array or Optional conformed to Equatable. Since these types can store non-equatable types, we needed to be able to express that they are equatable only when storing an equatable type.

This meant these == operators had a big limitation: they couldn’t be used two levels deep.

With conditional conformance, we can now fix this. It allows us to write that these types conform to Equatable—using the already-defined == operator—if the types they are based on are equatable.