A sequence containing the same elements as this sequence, but on which some operations, such as map and filter, are implemented lazily.
SDK
- Xcode 8.0+
Framework
- Swift Standard Library
Declaration
var lazy: LazySequence <Array<Element>> { get }
Instance Property
lazy
See Also
Transforming an Array
func map<T>((Element) -> T) -> [T]Returns an array containing the results of mapping the given closure over the sequence’s elements.
func flatMap <SegmentOfResult>((Element) -> SegmentOfResult) -> [SegmentOfResult.Element] Returns an array containing the concatenated results of calling the given transformation with each element of this sequence.
func compactMap <ElementOfResult>((Element) -> ElementOfResult?) -> [ElementOfResult] Returns an array containing the non-nil results of calling the given transformation with each element of this sequence.
func reduce<Result>(Result, (Result, Element) -> Result) -> ResultReturns the result of combining the elements of the sequence using the given closure.
func reduce<Result>(into: Result, (inout Result, Element) -> ()) -> ResultReturns the result of combining the elements of the sequence using the given closure.