_SequenceWrapper

protocol _SequenceWrapper

A type that is just a wrapper over some base Sequence

Inheritance View Protocol Hierarchy →
Associated Types
Base : Sequence
Iterator : IteratorProtocol = Self.Base.Iterator
Import import Swift

Default Implementations

Where Iterator == Base.Iterator

var underestimatedCount: Int

Returns a value less than or equal to the number of elements in the sequence, nondestructively.

Complexity: O(n), where n is the length of the sequence if the sequence is a collection or wraps a collection; otherwise, O(1).

Declaration

var underestimatedCount: Int { get }