Swift samples

Swift/Iteration.playground/Pages/Break.xcplaygroundpage/Contents.swift

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+//: [For-in](@previous)
+
+let flag = true
+
+while (true) {
+    print("Hello")
+    if flag { break }
+    print("World")
+}
+
+print("There")
+
+
+//: [Continue](@next)

Swift/Iteration.playground/Pages/Continue.xcplaygroundpage/Contents.swift

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+//: [Break](@previous)
+
+var i = 0
+while (i < 10) {
+    i += 1
+    print("Hello")
+    if i == 5 { continue }
+    print("World")
+}
+
+//: [forEach](@next)

Swift/Iteration.playground/Pages/enumerated.xcplaygroundpage/Contents.swift

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+//: [Repeat-While](@previous)
+
+//: offset - index of element
+let arr = [7, 10, 1, 5, 2]
+
+for i in arr.enumerated() {
+    print(i.offset, i.element)
+}
+
+
+//: [For-in](@next)

Swift/Iteration.playground/Pages/for-in.xcplaygroundpage/Contents.swift

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+//: [Enumerated](@previous)
+
+let arr = [7, 10, 1, 5, 2]
+for i in arr {
+    print(i)
+}
+
+//: [Break](@next)

Swift/Iteration.playground/Pages/for.xcplaygroundpage/Contents.swift

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+//: stride(from:to:by:) iterating over collection. C-style loop has been removed
+for i in stride(from: 0, to: 10, by: 1) {
+    print(i)
+}
+
+
+
+//: [While](@next)

Swift/Iteration.playground/Pages/forEach.xcplaygroundpage/Contents.swift

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+//: [Continue](@previous)
+
+let a = [7, 10, 1, 5, 2]
+
+a.forEach { x in
+    print (x)
+}
+
+a.forEach {
+    print($0)
+}
+
+[7,10,1,5].forEach {
+    print($0)
+}
+
+
+//: [Map](@next)

Swift/Iteration.playground/Pages/map.xcplaygroundpage/Contents.swift

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+//: [ForEach](@previous)
+
+let a = [7, 10, 1, 5, 2]
+
+a.map {
+    $0 * 2
+}
+
+a.map { x in
+    x * 2
+}

Swift/Iteration.playground/Pages/repeat-while.xcplaygroundpage/Contents.swift

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+//: [While](@previous)
+
+//: Note: Do-While has been removed. Repeat-While instead.
+var i = 0
+repeat {
+    i += 1
+    print(i)
+} while(i < 10)
+
+
+//: [Enumerated](@next)

Swift/Iteration.playground/Pages/while.xcplaygroundpage/Contents.swift

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+//: [For](@previous)
+var a = 0
+while (a < 10) {
+    a += 1
+    print(a)
+}
+//: [Repeat-While](@next)
+
+
+

Swift/Iteration.playground/contents.xcplayground

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+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='6.0' target-platform='macos' display-mode='raw'>
+    <pages>
+        <page name='for'/>
+        <page name='while'/>
+        <page name='repeat-while'/>
+        <page name='enumerated'/>
+        <page name='for-in'/>
+        <page name='Break'/>
+        <page name='Continue'/>
+        <page name='forEach'/>
+        <page name='map'/>
+    </pages>
+</playground>