Swift_generics.swift

func computeMax<T: Comparable>(a: T, b: T) -> T{
  return if a > b {
    a
  } else  {
    b
  }
}

// Here, swift inferred that T is Float (or Double ?)
print(computeMax(a: 100, b: 20.0))

struct Stack<T> {
    var items: [T] = []
    mutating func push(_ item: T) {
        items.append(item)
    }
    mutating func pop() -> T {
        return items.removeLast()
    }
}

// Swift cannot infer T here
var stackOfStrings = Stack<String>()
stackOfStrings.push("I")
stackOfStrings.push("❤️")
stackOfStrings.push("Swift")

print(stackOfStrings.pop())
print(stackOfStrings)