Add array Cartesian product

Author: CosynPa

TZStackView.xcodeproj/project.pbxproj

@@ -13,13 +13,14 @@
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 		5F50EF474D670FC33E8E80EA /* Images.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 5F50ED5A43FBFC32B9B9E1AA /* Images.xcassets */; };
+		7EF572D81BEE41100095237E /* Array+Product.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7EF572D71BEE41100095237E /* Array+Product.swift */; };
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+		A45441D01B9B6D9C002452BA /* TZSpacerView.swift in Sources */ = {isa = PBXBuildFile; fileRef = A45441CC1B9B6D9C002452BA /* TZSpacerView.swift */; };
+		A45441D11B9B6D9C002452BA /* TZStackView.swift in Sources */ = {isa = PBXBuildFile; fileRef = A45441CD1B9B6D9C002452BA /* TZStackView.swift */; };
+		A45441D21B9B6D9C002452BA /* TZStackViewAlignment.swift in Sources */ = {isa = PBXBuildFile; fileRef = A45441CE1B9B6D9C002452BA /* TZStackViewAlignment.swift */; };
+		A45441D31B9B6D9C002452BA /* TZStackViewDistribution.swift in Sources */ = {isa = PBXBuildFile; fileRef = A45441CF1B9B6D9C002452BA /* TZStackViewDistribution.swift */; };
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@@ -67,6 +68,7 @@
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 		5F50EFD0C46B7C7F989F10E1 /* TZStackViewTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = TZStackViewTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		7EF572D71BEE41100095237E /* Array+Product.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Array+Product.swift"; sourceTree = "<group>"; };
 		A45441BF1B9B6D71002452BA /* TZStackView.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = TZStackView.framework; sourceTree = BUILT_PRODUCTS_DIR; };
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@@ -130,6 +132,7 @@
 				5F50EDEB0947F99E67140FC6 /* TZStackViewTests.swift */,
 				DB5B70841B2A1963006043BD /* TestView.swift */,
 				DB5B70861B2B8816006043BD /* TZStackViewTestCase.swift */,
+				7EF572D71BEE41100095237E /* Array+Product.swift */,
 				5F50E05A91CC731E5AFD4E94 /* Supporting Files */,
 			);
 			path = TZStackViewTests;
@@ -325,6 +328,7 @@
 				5F50E6EAC8DDE44079E03638 /* TZStackViewTests.swift in Sources */,
 				DB5B70871B2B8816006043BD /* TZStackViewTestCase.swift in Sources */,
 				DB5B70851B2A1963006043BD /* TestView.swift in Sources */,
+				7EF572D81BEE41100095237E /* Array+Product.swift in Sources */,
 				5F50EAD959E8ACC5929DBD75 /* NSLayoutConstraintExtension.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;

TZStackViewTests/Array+Product.swift

@@ -0,0 +1,21 @@
+//
+//  Array+Product.swift
+//  TZStackView
+//
+//  Created by Pan Yusheng on 11/7/15.
+//  Copyright © 2015 Tom van Zummeren. All rights reserved.
+//
+
+import Foundation
+
+func * <E1, E2>(left: Array<E1>, right: Array<E2>) -> Array<(E1, E2)> {
+    var result = [(E1, E2)]()
+    
+    for e1 in left {
+        for e2 in right {
+            result.append((e1, e2))
+        }
+    }
+    
+    return result
+}