Top "Categories" questions

Categories are groupings of information.

What is the difference between inheritance and Categories in Objective-C

Can some one explain to me the difference between categories and inheritance in Objective C? I've read the entry in …

objective-c oop inheritance categories
How do I use objc_setAssociatedObject/objc_getAssociatedObject inside an object?

If I use objc_setAssociatedObject/objc_getAssociatedObject inside a category implementation to store a simulated instance variable in a setter …

objective-c categories
MAGENTO - Display sub-category products in root category

i havent been able to find the answer for this anywhere but i cant seen to display any of the …

magento categories
In R, how to collapse categories or recategorize variables?

I am sure this is a very basic question: In R I have 600,000 categorical variables - each of which is …

r categories collapse
Add categories to custom post type and display based on categories

I am working on a wordpress site with theme name flozo . It has a custom post type named work. I …

wordpress categories custom-post-type
Get custom category name or id on archive.php page Wordpress

How can I "fetch" custom category name or id on archive.php page. So when i'm on that page template, …

wordpress categories archive
Instance Variables for Objective C Categories

I have a situation where it seems like I need to add instance variables to a category, but I know …

objective-c cocoa oop categories
setting new properties in category interface/implementation

Ok, so I have this, but it wont work: @interface UILabel (touches) @property (nonatomic) BOOL isMethodStep; @end @implementation UILabel (touches) …

objective-c ios categories
Objective-C Category Causing unrecognized selector

My project has a UIImage category function that I want to call from another class. I properly import the header …

iphone objective-c cocoa categories
Objective-C categories: Can I add a property for a method not in my category?

I want to use a category to make a method on the original class available as a property as well. …

objective-c properties categories