An immutable, integer indexed, array of objects from Apple Foundation framework.
384
votes
16answers
165k views
How to sort an NSMutableArray with custom objects in it?
What I want to do seems pretty simple, but I can't find any answers on the web. I have an NSMutableArray of objects, let's say they are 'Person' objects. I want to sort the NSMutableArray by ...
128
votes
2answers
59k views
How to sort a NSArray alphabetically?
How can I sort an array filled with [UIFont familyNames] into alphabetical order?
48
votes
7answers
37k views
Sort NSArray of date strings or objects
I have an NSArray that contains date strings like this: "Thu, 21 May 09 19:10:09 -0700"
I need to sort the NSArray by date. I thought about converting the date string to an NSDate object first, but ...
166
votes
2answers
113k views
How do I iterate over an NSArray?
I'm looking for the standard idiom to iterate over an NSArray. My code needs to be suitable for OS X 10.4+.
22
votes
4answers
32k views
Using NSPredicate to filter an NSArray based on NSDictionary keys
I have an array of dictionaries.
I want to filter the array based on a key.
I tried this:
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"(SPORT == %@)", @"Football"];
NSArray ...
0
votes
2answers
648 views
How can I sort an NSArray containing NSDictionaries?
I have an NSArray which contains NSDictionary objects. Each of these NSDictionary objects contains an ORDER key.
How can I sort this NSArray based on this key within each of these NSDictionaries?
51
votes
2answers
37k views
Convert NSArray to NSString in Objective-C
I am wondering how to convert an NSArray example: ( [43,545,@"Test"] ) to a string in objective-c. An applescript example might be:
set the_array to {43,"Testing", 474343}
set the_array to the_array ...
3
votes
6answers
3k views
73
votes
2answers
21k views
Best practice? - Array/Dictionary as a Core Data Entity Attribute
I am new to Core Data. I have noticed that collection types are not available as attribute types and would like to know what the most efficient way is of storing array/dictionary type data as an ...
8
votes
2answers
30k views
Plist Array to NSDictionary
I have a plist:
<plist version="1.0">
<array>
<dict>
<key>name</key>
<string>Alabama</string>
<key>abreviation</key>
...
27
votes
7answers
4k views
Non-retaining array for delegates
In a Cocoa Touch project, I need a specific class to have not only a single delegate object, but many of them.
It looks like I should create an NSArray for these delegates;
the problem is that ...
28
votes
10answers
5k views
What's the best way to put a c-struct in an NSArray?
What's the usual way to store c-structures in an NSArray? Advantages, disadvantages, memory handling?
Notably, what's the difference between valueWithBytes and valueWithPointer -- raised by justin ...
27
votes
4answers
5k views
Compiler error “expected method not found” when using subscript on NSArray
I wrote this simple code to try out the new Objective-C literal syntax for NSArrays:
NSArray *array = @[@"foo"];
NSLog(@"%@", array[0]);
The first line works fine, but the subscripting results in ...
3
votes
2answers
7k views
Sorting a NSArray
I have a NSArray of objects.
Those objects have an int attribute called "distance". I would like to sort my array by distance.
Could someone please tell me how to do that ? I can't understand how the ...
22
votes
3answers
16k views
Difference between NSArray and NSMutableArray
What is the difference b/w NSArray and NSMutableArray ? i am new to iPhone.
