nsarray

For example: I have two NSMutableArray . One @[1,2,3,4,5,6,7] . Other have objects like @[ @{@idObjectToSearch":1, @"name":@"aaaaa", @"surname": @"bbbbb"}, @{@idObjectToSearch":2, @"name":@"aaaaa", @"surname": @"ccccc"}, ... @{@idObjectToSearch":100, @"name":@"aaaaa", @"surname": @"cccdcd"} ]; So how I could extract needed objects from second array more effective way? You need to use NSPredicate with your second array. NSPredicate *predicate = [NSPredicate predicateWithFormat:@"idObjectToSearch IN %@", firstArray]; //In above predicate instead of passing `1` you need to pass object from first

Is there a quick way in Objective-C of identifying NSDate's in an NSArray that have a time of day after a given time (e.g. 8pm)? I can't quite see anyway other than manually walking through each NSDate in the array and then using NSDateComponents to break out the hour/minute/second...Not even sure if there is a simple way to get the time from an NSDate in a fashion that represents a fraction of 24hours, as this might help a little. (e.g. 6pm would be 18/24 = 0.75 in this case) There is no need to break in NSDateComponents . NSTimeInterval interval = [date1 timeIntervalSinceDate:date2]; if

how can I edit or change a value string from: in this plist I need change or Set "NO" in Enabled Value from Item 2, I see a lot examples, but not working, or are deprecated, or don't use ARC, any idea or example code? please help guys EDIT#1: I try this (not work) NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]; path = [path stringByAppendingPathComponent:@"List.plist"]; NSFileManager *fileManager = [NSFileManager defaultManager]; if (![fileManager fileExistsAtPath:path]) { NSString *sourcePath = [[NSBundle mainBundle]

This question already has answers here : What's the Best Way to Shuffle an NSMutableArray? (12 answers) Closed 4 years ago . Let's say I have a NSArray with 50-100 objects inside. How can I put the array in a random order? There are a lot of ways to do it, but most will involve simply generating random numbers. Perhaps you could use this technique using an NSMutableArray: Generate a random number between 0 and 49 (assuming 50 elements) Swap elements 0 and whatever number you generate Generate a random number between 1 and 49 Swap elements 1 and whatever number you generate Etc. That would

I'm currently in the development process of an application which needs to be able to grab two objects from an NSArray and then store it in another object. I've currently got this fast enumeration loop going on, NSUInteger count = 0; NSUInteger i = count + 1; for (id item in [section items]) { item1 = [section.items objectAtIndex:count]; item2 = [section.items objectAtIndex:i]; count++; } Now, what I want to do is grab the object in the first position and store in item1, and then the second position will be stored in item2. The next time it goes through the loop, I want it to store the object

I've been trying to sort an NSArray of NSDictionaries using a comparator, but I cannot seem to get the output I desire. The output I'm trying to achieve is that A-Z usernames should come first in the sorted array, then usernames that start with a digit should come second in the sorted array, and lastly usernames that start with an underscore should be last in the sorted array. Any help is truly appreciated! EDIT: It should be sorted so it looks consistent through the whole NSArray so that: _Anna comes before _Bob and _11Bob comes before _12Cary but after _09Bob Example of desired output I'm