Adding Properties to an Objective-C Category

Posted by David Hamrick on 12 February 2012 Let’s say you have a category that needs to store some information. Unfortunately you can’t add an instance variable, but you can add something called an associated reference. From the documentation: Associative references, available starting in Mac OS X v10.6, simulate the addition of object instance variables to an existing class To create an associati

[matsui2014]

カテゴリにプロパティを追加する。