Convert NSArray to NSString in Objective-C
I am wondering how to convert an NSArray [@”Apple”, @”Pear “, 323, @”Orange”] to a string in Objective-C. 9 Answers 9
objective-c
Is it possible to refresh a single UITableViewCell in a UITableView?
I have a custom UITableView using UITableViewCells. Each UITableViewCell has 2 buttons. Clicking these buttons will change an image in a UIImageView within … Read more
How do I pass multiple parameters in Objective-C?
I have read several of the post about Objective-C method syntax but I guess I don’t understand multiple names for a method. I’m … Read more
What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
I was going through the release notes for Xcode 4.4 and noticed this: LLVM 4.0 Compiler Xcode now includes the Apple LLVM Compiler … Read more
Convert to absolute value in Objective-C
How do I convert a negative number to an absolute value in Objective-C? i.e. -10 becomes 10? 3 Answers 3
In Objective-C, what is the equivalent of Java’s “instanceof” keyword?
I would like to check whether an object (e.g. someObject) is assignable (cast-able) to a variable of another type (e.g. SpecifiedType). In Java, … Read more
What’s the Best Way to Shuffle an NSMutableArray?
If you have an NSMutableArray, how do you shuffle the elements randomly? (I have my own answer for this, which is posted below, … Read more
Objective-C implicit conversion loses integer precision ‘NSUInteger’ (aka ‘unsigned long’) to ‘int’ warning
I’m working through some exercises and have got a warning that states: Implicit conversion loses integer precision: ‘NSUInteger’ (aka ‘unsigned long’) to ‘int’ … Read more
How to change time and timezone in iPhone simulator?
How do I change time and time zone in the iPhone simulator? 12 Answers 12
What do the plus and minus signs mean in Objective-C next to a method?
In Objective-C, I would like to know what the + and – signs next to a method definition mean. – (void)loadPluginsAtPath:(NSString*)pluginPath errors:(NSArray **)errors; … Read more