0001    public struct IterateGenerator
Iterate.swift:13
  public func generate() -> IterateGenerator<Element> {
Iterate.swift:14
    return IterateGenerator(x: x, f: f)
<Element
Iterate.swift:2
  private var x: Element
Iterate.swift:3
  private let f: Element -> Element
Iterate.swift:3
  private let f: Element -> Element
Iterate.swift:4
  public mutating func next() -> Element? {
>: GeneratorType {
0002      private var x
Iterate.swift:5
    defer { x = f(x) }
Iterate.swift:5
    defer { x = f(x) }
Iterate.swift:6
    return x
: Element
0003      private let f
Iterate.swift:5
    defer { x = f(x) }
: Element -> Element
0004      public mutating func next() -> Element? {
0005        defer { x = f(x) }
0006        return x
0007      }
0008    }
0009    
0010    public struct IterateSequence<Element
Iterate.swift:11
  private let x: Element
Iterate.swift:12
  private let f: Element -> Element
Iterate.swift:12
  private let f: Element -> Element
Iterate.swift:13
  public func generate() -> IterateGenerator<Element> {
>: SequenceType {
0011      private let x
Iterate.swift:14
    return IterateGenerator(x: x, f: f)
: Element
0012      private let f
Iterate.swift:14
    return IterateGenerator(x: x, f: f)
: Element -> Element
0013      public func generate() -> IterateGenerator<Element> {
0014        return IterateGenerator(x: x, f: f)
0015      }
0016    }
0017    
0018    public struct IterateEndGenerator
Iterate.swift:31
  public func generate() -> IterateEndGenerator<Element> {
Iterate.swift:32
    return IterateEndGenerator(x: x, f: f)
<Element
Iterate.swift:19
  private var x: Element?
Iterate.swift:20
  private var f: Element -> Element?
Iterate.swift:20
  private var f: Element -> Element?
Iterate.swift:21
  public mutating func next() -> Element? {
>: GeneratorType {
0019      private var x
Iterate.swift:22
    guard let y = x else { return nil }
Iterate.swift:23
    defer { x = f(y) }
: Element?
0020      private var f
Iterate.swift:23
    defer { x = f(y) }
: Element -> Element?
0021      public mutating func next() -> Element? {
0022        guard let y = x else { return nil }
0023        defer { x = f(y) }
0024        return y
0025      }
0026    }
0027    
0028    public struct IterateEndSequence<Element
Iterate.swift:29
  private let x: Element
Iterate.swift:30
  private let f: Element -> Element?
Iterate.swift:30
  private let f: Element -> Element?
Iterate.swift:31
  public func generate() -> IterateEndGenerator<Element> {
>: SequenceType {
0029      private let x
Iterate.swift:32
    return IterateEndGenerator(x: x, f: f)
: Element
0030      private let f
Iterate.swift:32
    return IterateEndGenerator(x: x, f: f)
: Element -> Element?
0031      public func generate() -> IterateEndGenerator<Element> {
0032        return IterateEndGenerator(x: x, f: f)
0033      }
0034    }