struct LinkedList enum Node

Singly linked list in Swift, but you get a value type instead. What a terrible idea.

public struct LinkedList<Element> {
    private enum Node {
        case value(Element)
        indirect case node(value: Element, next: Node)
    }
}

And this, of course, is not a new idea. It has been explored in posts like What are indirect enums? or Swift Algorithm Club: Swift Binary Search Tree Data Structure. But I only saw them after writing all the code ヽ(￣～￣)ノ Anyways, good linked list practice, I guess.

Road Map

• CustomDebugStringConvertible
• CustomReflectable
• CustomStringConvertible
• CVarArg

  Declaring conformance to the CVarArg protocol for types defined outside the standard library is not supported.
  

• Decodable when Element conforms to Decodable.
• Encodable when Element conforms to Encodable.
• Equatable when Element conforms to Equatable.
• ExpressibleByArrayLiteral
• Hashable when Element conforms to Hashable.
• MutableCollection
  • Benchmark Sequence conformance performance
  • Benchmark Collection conformance performance
  • Benchmark MutableCollection conformance performance
  • Implement some methods that usually requires BidirectionalCollection
    • reversed
    • ...
• RangeReplaceableCollection
  • Benchmark, since default implementations are of real nightmare
• Try to be like Array
  • Implement slices like ArraySlice?