Merge pull request kodecocodes#555 from remlostime/k-means-swift

[Swift 4] Update KMeans

Author: kelvinlauKL

K-Means/Tests/KMeansTests.swift

@@ -10,6 +10,13 @@ import Foundation
 import XCTest
 
 class KMeansTests: XCTestCase {
+  func testSwift4() {
+    // last checked with Xcode 9.0b4
+    #if swift(>=4.0)
+      print("Hello, Swift 4!")
+    #endif
+  }
+
   func genPoints(_ numPoints: Int, numDimensions: Int) -> [Vector] {
     var points = [Vector]()
     for _ in 0..<numPoints {

K-Means/Tests/Tests.xcodeproj/project.pbxproj

@@ -229,7 +229,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = macosx;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -271,7 +271,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.alvahouse322.Tests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = macosx;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};