Enum "shorter dot" syntax sugar

[dagba]

Hello there! 🖖

I've found the explicitly specifying an enum's name is too boilerplate. So can u please add "shorter dot" syntax sugar?

Example:

enum CompassPoint {
    case north
    case south
    case east
    case west
}

var directionToHead = CompassPoint.west The type of directionToHead is inferred when it’s initialized with one of the possible values of CompassPoint. Once directionToHead is declared as a CompassPoint, you can set it to a different CompassPoint value using a shorter dot syntax:

directionToHead = .east The type of directionToHead is already known, and so you can drop the type when setting its value. This makes for highly readable code when working with explicitly typed enumeration values.

if directionToHead == .east { doSomething() }

[mateusfccp]

Duplicate of #357.