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: LazyInstance Property
lazy
See Also
Transforming a Set
func map<T>((Element) -> T) -> [T]Returns an array containing the results of mapping the given closure over the sequence’s elements.
func compactReturns an array containing the non-nil results of calling the given transformation with each element of this sequence.
func flatReturns an array containing the concatenated 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.
func sorted() -> [Element]Returns the elements of the sequence, sorted.
func sorted(by: (Element, Element) -> Bool) -> [Element]Returns the elements of the sequence, sorted using the given predicate as the comparison between elements.
func shuffled() -> [Element]Returns the elements of the sequence, shuffled.
func shuffled<T>(using: inout T) -> [Element]Returns the elements of the sequence, shuffled using the given generator as a source for randomness.