Show how to create a simple singleton with GDC

rhalgravez · Mar 29, 2017 · c4a4cdc · c4a4cdc
1 parent eb8ceeb
commit c4a4cdc
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Showing 3 changed files with 45 additions and 0 deletions.
diff --git a/Singleton/Singleton.xcodeproj/project.pbxproj b/Singleton/Singleton.xcodeproj/project.pbxproj
@@ -11,6 +11,7 @@
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 		DFF4DDED1E8C6D1F00D9C91E /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = DFF4DDEB1E8C6D1F00D9C91E /* LaunchScreen.storyboard */; };
+		DFF4DDF61E8C6E1000D9C91E /* AGTConnorMacLeod.m in Sources */ = {isa = PBXBuildFile; fileRef = DFF4DDF51E8C6E1000D9C91E /* AGTConnorMacLeod.m */; };
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@@ -21,6 +22,8 @@
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 		DFF4DDEC1E8C6D1F00D9C91E /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
 		DFF4DDEE1E8C6D1F00D9C91E /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		DFF4DDF41E8C6E1000D9C91E /* AGTConnorMacLeod.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AGTConnorMacLeod.h; sourceTree = "<group>"; };
+		DFF4DDF51E8C6E1000D9C91E /* AGTConnorMacLeod.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = AGTConnorMacLeod.m; sourceTree = "<group>"; };
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@@ -59,6 +62,8 @@
 				DFF4DDEB1E8C6D1F00D9C91E /* LaunchScreen.storyboard */,
 				DFF4DDEE1E8C6D1F00D9C91E /* Info.plist */,
 				DFF4DDDD1E8C6D1F00D9C91E /* Supporting Files */,
+				DFF4DDF41E8C6E1000D9C91E /* AGTConnorMacLeod.h */,
+				DFF4DDF51E8C6E1000D9C91E /* AGTConnorMacLeod.m */,
 			);
 			path = Singleton;
 			sourceTree = "<group>";
@@ -142,6 +147,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				DFF4DDE21E8C6D1F00D9C91E /* AppDelegate.m in Sources */,
+				DFF4DDF61E8C6E1000D9C91E /* AGTConnorMacLeod.m in Sources */,
 				DFF4DDDF1E8C6D1F00D9C91E /* main.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;

diff --git a/Singleton/Singleton/AGTConnorMacLeod.h b/Singleton/Singleton/AGTConnorMacLeod.h
@@ -0,0 +1,15 @@
+//
+//  AGTConnorMacLeod.h
+//  Singleton
+//
+//  Created by Roberto Manuel Halgravez Perea on 3/29/17.
+//  Copyright © 2017 RHalgravez. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface AGTConnorMacLeod : NSObject
+
++(instancetype) sharedConnorMacLeod;
+
+@end
diff --git a/Singleton/Singleton/AGTConnorMacLeod.m b/Singleton/Singleton/AGTConnorMacLeod.m
@@ -0,0 +1,24 @@
+//
+//  AGTConnorMacLeod.m
+//  Singleton
+//
+//  Created by Roberto Manuel Halgravez Perea on 3/29/17.
+//  Copyright © 2017 RHalgravez. All rights reserved.
+//
+
+#import "AGTConnorMacLeod.h"
+
+@implementation AGTConnorMacLeod
+
++(instancetype) sharedConnorMacLeod {
+
+    static dispatch_once_t onceToken;
+    static AGTConnorMacLeod *shared;
+    dispatch_once(&onceToken, ^{
+        shared = [[AGTConnorMacLeod alloc] init];
+    });
+
+    return shared;
+}
+
+@end