PrettyAnyAll.Swift

private extension GeneratorType {
  mutating func any(@noescape pred: Element -> Bool) -> Bool {
    return next().map { el in pred(el) || any(pred) } ?? false
  }
  mutating func all(@noescape pred: Element -> Bool) -> Bool {
    return next().map { el in pred(el) && all(pred) } ?? true
  }
}

public extension SequenceType {
  func any(@noescape predicate: Generator.Element -> Bool) -> Bool {
    var g = self.generate()
    return g.any(predicate)
  }
  func all(@noescape predicate: Generator.Element -> Bool) -> Bool {
    var g = self.generate()
    return g.all(predicate)
  }
}