String(describing:)で挙動怪しそうなのと、rawValue上書きはあまり行儀良く無さそうというのを無視すれば、これありかも(　´･‿･｀) #swift #CodePiece

CodePiece.swift

extension String {
    var capitalizingFirstLetter: String {
        return String(characters.prefix(1)).capitalized + String(characters.dropFirst())
    }
}

enum MyEnum: String {
    case fooBar
    
    var rawValue: String { return String(describing: self).capitalizingFirstLetter  }
}

MyEnum.fooBar.rawValue