all.

Now, I’m learning Swift for creating an iOS application. I’m cuious about Swift, when I during create an app. I can make an app without “special features” like Generic type, Opaque Types, Enumerations, Nested type, any other things. I can make an app using if-else, for loop, variables.

So, my question is why I should have to learn “special features” of Swift? When do I use it?
If I should learn special features, how can I study efficiently?

Please tell me your opinion. I want to know Senior Developer’s think.

Thank you for reading.