formIndex(before:)

import Swift

@frozen struct UTF16View

@frozen struct Substring

A slice of a string.

typealias Index = String.UTF16View.Index

var endIndex: Substring.UTF16View.Index { get }

var indices: Substring.UTF16View.Indices { get }

var startIndex: Substring.UTF16View.Index { get }

subscript(r: Range<Substring.UTF16View.Index>) -> Substring.UTF16View { get }

subscript(index: Substring.UTF16View.Index) -> Substring.UTF16View.Element { get }

func distance(from start: Substring.UTF16View.Index, to end: Substring.UTF16View.Index) -> Int

func formIndex(after i: inout Substring.UTF16View.Index)

func index(_ i: Substring.UTF16View.Index, offsetBy n: Int) -> Substring.UTF16View.Index

func index(_ i: Substring.UTF16View.Index, offsetBy n: Int, limitedBy limit: Substring.UTF16View.Index) -> Substring.UTF16View.Index?

func index(after i: Substring.UTF16View.Index) -> Substring.UTF16View.Index

func index(before i: Substring.UTF16View.Index) -> Substring.UTF16View.Index

typealias Element = String.UTF16View.Element

typealias Indices = String.UTF16View.Indices

typealias SubSequence = Substring.UTF16View