nsarray

问题 I retrieved values from parse and stored one by one in an array called "sto_tit". But if I try to print the values, I unable to print. It is get printed inside loop only, but not get printed Outside FOR LOOP or OUTSIDE ELSE block, I don't know what error in my code. Kindly guide me! MY CODE BELOW: func parse_db() { var sto_tit = [String]() // EITHER GLOBAL DECLARATION or INSIDE BLOCK, SAME ISSUE // FACING par_query.selectKeys(["story_title"]) par_query.findObjectsInBackgroundWithBlock({

问题 I'm actually starting to loose the will to live, this piece of code is driving me nuts! I'm trying to get the content of mathspractice.txt into *myLabel I'm using an array which is: -(void)loadText { NSArray *wordListArray = [[NSArray alloc] initWithArray: [[NSString stringWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@”mathspractice” ofType:@”txt”] encoding:NSMacOSRomanStringEncoding error:NULL] componentsSeparatedByString:@”\n”]]; self.theMathsPractice = wordListArray;

问题 I've been working on this project to expand my portfolio. I am still rather new to objective-c, so help would be highly appreciated! I have been tinkering with this code for a few days now. I am aware the labels work, as I was able to get all the cells to display the same information (not the desired result). This was likely to a fault where my array didn't store all the objects. Below is the code for my UIViewController; INITIAL PROBLEM So I have confirmed that the NSLog, displays 8 objects

问题 I'm creating bugs over and over by failing to notice the consequences of [NSArray count] being unsigned . Today's example is relatively unusual: for (int i = -1; i < [myArray count]; i++) { This loop never executes! You need (int)[myArray count] . My usual mistake is: for (int i = 0; i < [myArray count] - 1; i++) { If the array is empty, this loop executes basically forever because [myArray count]-1 overflows the unsigned int . I do use fast enumeration where possible, but in this project I

问题 So here is a partial sample of the relevant code. static NSMutableArray *radioInputArray; static NSMutableArray *buttonsArray; - (IBAction)lookForRadioButtons:(id)sender { // NSLog(@"Testing"); NSError *error; NSString *radiostr = [NSString stringWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"getRadios" ofType:@"txt"] encoding:NSASCIIStringEncoding error: &error] ; if (radiostr == nil) { NSLog (@"Error! %@", error); } else { NSLog(@"%@",radiostr); NSString *radiotxt= [webView

问题 How to add object to NSArray with key from database? i am using FMDatabase class to open database, its work ok, my problem is how to add object with key to NSArray, see this code @implementation ViewController { NSArray *allDevices; NSArray *searchResult; } - (void)viewDidLoad { [super viewDidLoad]; FMDatabase *db = [FMDatabase databaseWithPath:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"db.sqlite"]]; [db open]; FMResultSet *results = [db executeQueryWithFormat:@

问题 We fetch some JSON data using a REST protocol like this. jsonResult = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.AllowFragments) Which looks like this: jsonResult: ( { board = "[[\"1:\",\"Y\",\"U\",\"P\"]]"; }) From this we get a game board like so: if let boardContentArray = jsonResult[0]["board"] as NSArray?{ print("boardContentArray: \(boardContentArray)" ) } else { print("board element is not an NSArray") } The boardContentArray looks like this: It i

问题 I have an NSArray of objects, which have a property id . I then have another NSArray with a selection of ids. I need to get all the objects in the first array which have the ids listed in the second array. Is it possible to do this without for loops (well 1 for loop is ok, but I'd like to avoid it). I know how to do this with 2 for loops, but this seems very inefficient. So basically I'm looking for the most efficient way. (The Id is an NSURL btw, so it can't be anything integer specific) 回答1

问题 I am trying to search a String in NSDictionary stored in NSMutableArray for (int k = 0; k < [onlyActiveArr count]; k++) { NSString *localID = [onlyActiveArr objectAtIndex:k]; NSLog(@"%@",localID); int localIndex = [onlyActiveArr indexOfObject:localActiveCallID]; NSLog(@"%d",localIndex); for (NSDictionary *dict in self.SummaryArr) { NSLog(@"%@",[dict objectForKey:@"ActiveID"]); if (![[dict objectForKey:@"ActiveID"] isEqualToString:localID]) { NSLog(@"found such a key, e.g. %@",localID); } } }

问题 I have an array, let's call it "array" and inside of the array I have objects like this: "0 Here is an object" "4 Here's another object" "2 Let's put 2 here too!" "1 What the heck, here's another!" "3 Let's put this one right here" I would like to sort the arrays by that number, so it'll turn into this: "0 Here is an object" "1 What the heck, here's another!" "2 Let's put 2 here too!" "3 Let's put this one right here" "4 Here's another object" 回答1: You can use NSArray's