A value less than or equal to the number of elements in the collection.
SDK
Framework
var underestimatedCount: Int { get }
Complexity: O(1) if the collection conforms to Random; otherwise, O(n), where n is the length of the collection.
func forCalls the given closure on each element in the sequence in the same order as a for-in loop.
func enumerated() -> EnumeratedReturns a sequence of pairs (n, x), where n represents a consecutive integer starting at zero and x represents an element of the sequence.
var lazy: LazyA sequence containing the same elements as this sequence, but on which some operations, such as map and filter, are implemented lazily.
func makeReturns an iterator over the dictionary’s key-value pairs.