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
cocoa
Best way to remove from NSMutableArray while iterating?
In Cocoa, if I want to loop through an NSMutableArray and remove multiple objects that fit a certain criteria, what’s the best way … Read more
Why can’t code inside unit tests find bundle resources?
Some code I am unit testing needs to load a resource file. It contains the following line: NSString *path = [[NSBundle mainBundle] pathForResource:@”foo” … Read more
Xcode build failure “Undefined symbols for architecture x86_64”
An Xcode beginner’s question: It is my first experience with Xcode 4.6.3. I am trying to write a very simple console program, that … Read more
Check that an email address is valid on iOS [duplicate]
This question already has answers here: Closed 9 years ago. Possible Duplicate: Best practices for validating email address in Objective-C on iOS 2.0? … Read more
How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
I have a UIImage (Cocoa Touch). From that, I’m happy to get a CGImage or anything else you’d like that’s available. I’d like … Read more
iOS – Build fails with CocoaPods cannot find header files
I have an iOS project using CocoaPods. Everything was working smoothly until another developer started to work on the same project. He made … Read more
Execute a terminal command from a Cocoa app
How can I execute a terminal command (like grep) from my Objective-C Cocoa application? 12 Answers 12
How do I declare class-level properties in Objective-C?
Maybe this is obvious, but I don’t know how to declare class properties in Objective-C. I need to cache per-class a dictionary and … Read more
CSS Printing: Avoiding cut-in-half DIVs between pages?
I’m writing a plug-in for a piece of software that takes a big collection of items and pops them into HTML in a … Read more