PermutationGenerator

struct PermutationGenerator<C : CollectionType, Indices : SequenceType where C.Index == C.Index>

A generator that adapts a collection C and any sequence of its Index type to present the collection's elements in a permuted order.

Inheritance	`GeneratorType, SequenceType, _SequenceType, _Sequence_Type` View Protocol Hierarchy →
Associated Types	`Element = C.Generator.Element` The type of element returned by `next()`. `Generator = PermutationGenerator<C, Indices>` A type whose instances can produce the elements of this sequence, in order.
Import	`import Swift`

Construct a generator over a permutation of elements given by indices.

Requires: elements[i] is valid for every i in indices.

init(elements: C, indices: Indices)

Return a generator over the elements of this sequence.

Complexity: O(1)

func generate() -> PermutationGenerator<C, Indices>

Advance to the next element and return it, or nil if no next element exists.

Requires: no preceding call to self.next() has returned nil.

mutating func next() -> Element?

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