nsmutablearray

I have a NSMutableArray composed of NSAttributedString 's. I'm trying to convert it to a single NSAttributedString separating all the NSAttributedString 's with a character. This approach is similar to the conversion of an array to a NSString with the componentsJoinedByString:@"," method but unfortunately this method doesn't exist with the NSAttributedString . How can I convert the array? Thanks. I'd to the old way: NSMutableAttributedString *attrStr = [[NSMutableAttributedString alloc] init]; NSAttributedString *jointElement = [[NSAttributedString alloc] initWithString:@","] for (int i = 0; i

I would like to create my own custom NSMutableArray of my custom objects: @interface Course : NSObject { NSString *className; NSString *classGrade; NSInteger creditHours; } This class will store an array of courses : @interface AllCourses : NSObject : NSMutableArray{ NSMutableArray *arrClasses; } I would like "AllCourses" to inherit from NSMutableArray so i can use it like any other NSMutableArray Object and add\remove courses from it and load it into a tableView etc... So my question is ,if u would be so kind, is what my implementation of "AllCourses" should look like ? Lorenzo B First of all

I have an NSMutableArray object called logBuffer, which holds log information and dumps it in a file every N lines. When that happens, I remove all its entries, with [logBuffer removeAllObjects] Sometimes this throws an exception: [__NSArrayM removeObjectAtIndex:]: index 7 beyond bounds [0 .. 6] I guess removeAllObjects internally iterates through all objects in the array, but I am not sure how it can go beyond its bounds. My only though is that there is another thread that manipulates the array while the objects are being removed, but I am not sure at all. Any thoughts? EDIT: Here's some

I've used this tutorial to create an app with a table view that is populated using an NSMutableArray. Now I'd like to add the functionality to add additional items to the array and save/load them. I've customized the Fruit class to look like this: #import <UIKit/UIKit.h> @interface Fruit : NSObject { NSString *name; NSString *instructions; NSString *explination; NSString *imagePath; } @property(nonatomic,copy) NSString *name; @property(nonatomic,copy) NSString *instructions; @property(nonatomic,copy) NSString *explination; @property(nonatomic,copy) NSString *imagePath; - (id)initWithName: