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[stdlib] Rename index(...) methods to firstIndex(...)

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A la SE-204.
This commit is contained in:
Nate Cook
2017-10-19 11:05:48 -05:00
parent 67852ed460
commit 58933d88c5
45 changed files with 200 additions and 175 deletions
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12
stdlib/public/core/StringUnicodeScalarView.swift
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@@ -52,7 +52,7 @@ extension String {
/// using the `String` type's `init(_:)` initializer.
///
/// let favemoji = "My favorite emoji is 🎉"
/// if let i = favemoji.unicodeScalars.index(where: { $0.value >= 128 }) {
/// if let i = favemoji.unicodeScalars.firstIndex(where: { $0.value >= 128 }) {
/// let asciiPrefix = String(favemoji.unicodeScalars[..<i])
/// print(asciiPrefix)
/// }
@@ -156,7 +156,7 @@ extension String {
/// at the found index:
///
/// let greeting = "Hello, friend!"
/// if let i = greeting.unicodeScalars.index(where: { "A"..."Z" ~= $0 }) {
/// if let i = greeting.unicodeScalars.firstIndex(where: { "A"..."Z" ~= $0 }) {
/// print("First capital letter: \(greeting.unicodeScalars[i])")
/// print("Unicode scalar value: \(greeting.unicodeScalars[i].value)")
/// }
@@ -277,7 +277,7 @@ extension String {
/// another string's `unicodeScalars` view.
///
/// let picnicGuest = "Deserving porcupine"
/// if let i = picnicGuest.unicodeScalars.index(of: " ") {
/// if let i = picnicGuest.unicodeScalars.firstIndex(of: " ") {
/// let adjective = String(picnicGuest.unicodeScalars[..<i])
/// print(adjective)
/// }
@@ -474,7 +474,7 @@ extension String.UnicodeScalarIndex {
///
/// let cafe = "Café 🍵"
///
/// let utf16Index = cafe.utf16.index(of: 32)!
/// let utf16Index = cafe.utf16.firstIndex(of: 32)!
/// let scalarIndex = String.Index(utf16Index, within: cafe.unicodeScalars)!
///
/// print(String(cafe.unicodeScalars[..<scalarIndex]))
@@ -507,7 +507,7 @@ extension String.UnicodeScalarIndex {
/// in the string.
///
/// let cafe = "Café 🍵"
/// let i = cafe.unicodeScalars.index(of: "🍵")
/// let i = cafe.unicodeScalars.firstIndex(of: "🍵")
/// let j = i.samePosition(in: cafe)!
/// print(cafe[j...])
/// // Prints "🍵"
@@ -625,7 +625,7 @@ extension String.UnicodeScalarView {
/// to, but not including, the first comma (`","`) in the string.
///
/// let str = "All this happened, more or less."
/// let i = str.unicodeScalars.index(of: ",")!
/// let i = str.unicodeScalars.firstIndex(of: ",")!
/// let substring = str.unicodeScalars[str.unicodeScalars.startIndex ..< i]
/// print(String(substring))
/// // Prints "All this happened"