Swift Language Extensions Protocol extensions
Example
A very useful feature of Swift 2.2 is having the ability of extending protocols.
It works pretty much like abstract classes when regarding a functionality you want to be available in all the classes that implements some protocol (without having to inherit from a base common class).
protocol FooProtocol {
func doSomething()
}
extension FooProtocol {
func doSomething() {
print("Hi")
}
}
class Foo: FooProtocol {
func myMethod() {
doSomething() // By just implementing the protocol this method is available
}
}
This is also possible using generics.
