nsdictionary

I want to use the octal permissions (used for chmod) for NSFilePosixPermissions. Here is what I did now: NSFileManager *manager = [NSFileManager defaultManager]; NSDictionary *attributes; [attributes setValue:[NSString stringWithFormat:@"%d", 0777] forKey:@"NSFilePosixPermissions"]; // chmod permissions 777 [manager setAttributes:attributes ofItemAtPath:@"/Users/lucky/Desktop/script" error:nil]; I get no error, but when I check the result with "ls -o" the permission are't -rwxrwxrwx. What's wrong? Thanks for help. gcbrueckmann First, NSFilePosixPermissions is the name of a constant. Its value

I've got dictionary stored in NSUserDefaults and I need to add/remove items in this dictionary. It bothers me that to do this I have to create mutable copy of entire dictionary, change one element and replace entire dictionary with new copy. copy = [[defaults objectForKey:@"foo"] mutableCopy]; [copy setObject:… forKey:@"bar"]; [defaults setObject:copy forKey:@"foo"]; and it involves even more copying and re-setting for objects deeper in the hierarchy. Is there a better way? I've tried to use [defaults setValue:… forKeyPath:@"foo.bar"] but that doesn't seem to work (object is not mutable). I

in Objective-C, I am using following codes to serialise a custom class to a dictionary which working fine. In order to being familiar to Swift, porting Objective-C codes to Swift. However I couldn’t achieve this one, how do I make this with Swift? this is how I achieve with Objective-C .h #import <Foundation/Foundation.h> #import <objc/runtime.h> @interface NSObject (aClass_NSDictionary) - (NSDictionary *)NSDictionaryFromClass; @end .m @implementation NSObject (aClass_NSDictionary) - (NSDictionary *)NSDictionaryFromClass { Class aClass = [self class]; u_int propertiesCount; objc_property_t

I have just realised that I can access NSDictionary using both objectForKey: and dict[key]? NSDictionary *coordsDict = @{@"xpos": @5.0, @"ypos": @7.2, @"zpos": @15.7}; NSLog(@"XPOS: %@", coordsDict[@"xpos"]); NSLog(@"XPOS: %@", [coordsDict objectForKey:@"xpos"]); Can anyone tell me if this has been hiding from me all along or if its some fairly recent change to the language? EDIT: The question does not generically refer to the new string literals, but more specifically to accessing NSDictionary with the same string literal syntax you would use for NSArray. I obviously overlooked this and just

I have a URL coming in to the AppDelegate method: func application(_ application: UIApplication, open url: URL, sourceApplication: String?, annotation: Any) -> Bool { } The URL looks like www.wesite.com/shareplace.html?placeid=123 . How can it be converted to a dictionary for easy access? I found some code on some website, but it's showing an error in Xcode 9: extension URL { var queryDictionary: [String: AnyObject]? { return URLComponents(url: self, resolvingAgainstBaseURL: false)? .queryItems? .reduce([:], combine: { (var result: [String: AnyObject], queryItem) -> [String: AnyObject] in if

I get this from a sample Flickr response in their api site: jsonFlickrApi({"method":{"_content":"flickr.test.echo"}, "format":{"_content":"json"}, "api_key":{"_content":"8038f7f7d7151ccbf6df2aa10b1b35ae"}, "stat":"ok"}) I can see the dictionary in there, right after the words jsonFlickApi. But how do I get rid of that leading text and put the dictionary into my NSDictionary? Use the NSJSONSerialization class to parse the JSON data. Edit: The jsonFlickrApi(...) indicates that you're using a JSONP endpoint to talk to Flickr. You don't need this; a plain JSON endpoint is fine. According to this