nsdictionary

问题 I have an NSArray of NSDictionary let Array = ( { name = "Auni"; age = "24"; transactionTime = "01-02-2011 12:32:39" }, { name = "Atiqah"; age = "23"; transactionTime = "02-02-2013 10:32:41" }, { name = "Aida"; age = "22"; transactionTime = "04-02-2020 18:32:21"}) How do I sort this array by most recent transactionTime ? Using Swift4. Thank you. Edit: It's easier to have back-end people do it for you. 回答1: You do not need to convert into Date object, dateStrings direct comparison will also

问题 I'm currently retrieving the Top 100 Scores for one of my leaderboards the following way: - (void) retrieveTop100Scores { __block int totalScore = 0; GKLeaderboard *myLB = [[GKLeaderboard alloc] init]; myLB.identifier = [Team currentTeam]; myLB.timeScope = GKLeaderboardTimeScopeAllTime; myLB.playerScope = GKLeaderboardPlayerScopeGlobal; myLB.range = NSMakeRange(1, 100); [myLB loadScoresWithCompletionHandler:^(NSArray *scores, NSError *error) { if (error != nil) { NSLog(@"%@", [error

问题 I updated to Swift 3 and I get this error and I can't solve it. Type 'Any' has no subscript member I already read the answers: 39480150 - 38956785 - 39516199 But I couldn't solve my problem with the answers. This is my code: let pathperdataselezionata = Bundle.main.path(forResource: "Annuale", ofType: "plist") let dictperdataselezionata = NSDictionary(contentsOfFile: pathperdataselezionata!) as![String:AnyObject] let valoridataodierna = dictperdataselezionata[annoscelto]?[mesescritto]?!

问题 I have the following code fragment: NSString* value = @"value"; NSString* key = @"key"; NSMutableDictionary* foo = [NSMutableDictionary dictionary]; NSDictionary* bar = [NSDictionary dictionary]; NSAssert([bar isKindOfClass: [NSMutableDictionary class]], @""); // passes the assert as both are NSCFDictionary; NSAssert([bar respondsToSelector: @selector(setValue:forKey:)], @""); // passes the assert because it NSCFDictionary does respond to the selector [foo setValue:value forKey:key]; // no

问题 I have the following code fragment: NSString* value = @"value"; NSString* key = @"key"; NSMutableDictionary* foo = [NSMutableDictionary dictionary]; NSDictionary* bar = [NSDictionary dictionary]; NSAssert([bar isKindOfClass: [NSMutableDictionary class]], @""); // passes the assert as both are NSCFDictionary; NSAssert([bar respondsToSelector: @selector(setValue:forKey:)], @""); // passes the assert because it NSCFDictionary does respond to the selector [foo setValue:value forKey:key]; // no

问题 Hi I have a json string converted unsing the JSON framework into a dictionary and I need to extract its content. How could I iterate to the nested dictionaries? I have already this code that allows me to see the dictionary: NSDictionary *results = [responseString JSONValue]; NSMutableArray *catArray = [NSMutableArray array]; for (id key in results) { NSLog(@"key: %@, value: %@", key, [results objectForKey:key]); [catArray addObject:key]; NSString *cat = key; } Could someone provide a sample

问题 I'm using parse.com in an iOS app to store data to the parse cloud service. I'm having trouble with a query of nested objects. I have the following data model: Class "Game" contains "winners" "winners" is an array of NSDictionary , each item in the dictionary is a mapping of 1 Player to N Powers playerPowers value is an array of PFObjects (powers only have a name currently) for key:objectId of a player (PFObject) For each winner, I add to "winners" (there can be multiple winners) an

问题 I've got a text file, with about 200,000 lines. Each line represents an object with multiple properties. I only search through one of the properties (the unique ID) of the objects. If the unique ID I'm looking for is the same as the current object's unique ID, I'm gonna read the rest of the object's values. Right now, each time I search for an object, I just read the whole text file line by line, create an object for each line and see if it's the object I'm looking for - which is basically

问题 I've got a text file, with about 200,000 lines. Each line represents an object with multiple properties. I only search through one of the properties (the unique ID) of the objects. If the unique ID I'm looking for is the same as the current object's unique ID, I'm gonna read the rest of the object's values. Right now, each time I search for an object, I just read the whole text file line by line, create an object for each line and see if it's the object I'm looking for - which is basically

问题 I've got a text file, with about 200,000 lines. Each line represents an object with multiple properties. I only search through one of the properties (the unique ID) of the objects. If the unique ID I'm looking for is the same as the current object's unique ID, I'm gonna read the rest of the object's values. Right now, each time I search for an object, I just read the whole text file line by line, create an object for each line and see if it's the object I'm looking for - which is basically