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Return a GeneratorType instance that wraps base but whose type depends only on the type of G.Element.

Example:

func countStrings() -> AnyGenerator<String> {
  let lazyStrings = (0..<10).lazy.map { String($0) }
 
  // This is a really complicated type of no interest to our
  // clients.
  let g: MapSequenceGenerator<RangeGenerator<Int>, String>
    = lazyStrings.generate()
  return anyGenerator(g)
}

Declaration

Return a GeneratorType instance whose next method invokes body and returns the result.

Example:

var x = 7
let g = anyGenerator { x < 15 ? x++ : nil }
let a = Array(g) // [ 7, 8, 9, 10, 11, 12, 13, 14 ]

Declaration