[swift-evolution] Proposal: Re-instate mandatory self for accessing instance properties and functions

[David Hart]

I don't understand the reasoning behind removing the need to access instance properties and functions using self. Swift has always seemed to prefer readability to brevity and the feature makes the distinction between local and instance variables/functions crystal clear. Any good reason I shouldn't go on with the proposition?

Just as example, my proposition makes the following piece of code illegal:

```
struct FooBar {
    var foo: String = "foobar"

    func bar() {
        print(foo) // compiler error
        print(self.foo) // compiler happy
    }

    func bar2() {
        bar() // compiler error
        self.bar() // compiler happy
    }
}
```