Property falsely returns Method insted of int about rubicon-objc HOT 2 CLOSED

Thank you for the inside @dgelessus. I tried len() and it worked but I didn't know if it was an accident or if it was designed to work. Now I know! I used it to fix beeware/toga#171.

from rubicon-objc.

You are right, there were some changes to how properties work (see #41), which means that if you want to use a property directly (without calling it like a method), you need to declare it first using ObjCClass.declare_property.

However that's not the reason why you're getting this error, and declare_property won't help here. count is always a method because of #42, which added special cases to make NSArray and NSDictionary work like Python list and dict. We had a small name conflict there, because there is a count method on Python list and Objective-C NSArray, but the two do different things. In the end, we decided to make count on NSArrays work like Python list.count. That means to get the length of a NSArray, you need to use len like with a Python list, instead of the count method.

from rubicon-objc.