struct JoinGenerator<Base : GeneratorType where Base.Element : SequenceType> A generator that presents the elements of the sequences generated by Base, concatenated using a given separator. Inheritance GeneratorType View Protocol Hierarchy → Import import Swift Initializers init(base:separator:) Creates a generator that presents the elements of the sequences generated by base, concatenated using separator. Complexity: O(separator.count). Declaration init<Separator : SequenceType where Separator.Generator.Element == Base.Element.Generator.Element>(base: Base, separator: Separator) Instance Methods mutating func next() Advance to the next element and return it, or nil if no next element exists. Declaration mutating func next() -> Base.Element.Generator.Element?