added adapter pattern

Author: Sebastian Boldt

GOFSwift.xcworkspace/xcuserdata/sebastianboldt.xcuserdatad/UserInterfaceState.xcuserstate

@@ -32,7 +32,7 @@
 * ✅ Bridge
 * ✅ Decorator
 * ✅ Composite
-* ❌ Adapter
+* ✅ Adapter
 * ❌ Facade
 * ❌ Flyweight
 * ❌ Protection Proxy

README.md

@@ -0,0 +1,38 @@
+//: [Previous](@previous)
+
+import Foundation
+
+protocol OlderDeathStarSuperLaserAiming {
+    var angleV: NSNumber {get}
+    var angleH: NSNumber {get}
+}
+
+struct DeathStarSuperLaserTarget {
+    let angleHorizontal: Double
+    let angleVertical: Double
+}
+
+struct OldDeathStarSuperlaserTarget : OlderDeathStarSuperLaserAiming {
+    private let target : DeathStarSuperLaserTarget
+    
+    var angleV:NSNumber {
+        return NSNumber(value: target.angleVertical)
+    }
+    
+    var angleH:NSNumber {
+        return NSNumber(value: target.angleHorizontal)
+    }
+    
+    init(_ target:DeathStarSuperLaserTarget) {
+        self.target = target
+    }
+}
+
+
+let target = DeathStarSuperLaserTarget(angleHorizontal: 14.0, angleVertical: 12.0)
+let oldFormat = OldDeathStarSuperlaserTarget(target)
+
+oldFormat.angleH
+oldFormat.angleV
+
+//: [Next](@next)

Structural.playground/Pages/Adapter.xcplaygroundpage/Contents.swift

@@ -4,5 +4,6 @@
         <page name='Bridge'/>
         <page name='Decorator'/>
         <page name='Composite'/>
+        <page name='Adapter'/>
     </pages>
 </playground>