Category in Objective-C
Translated from matz blog, 2005-03-04
It would seem that the “Category” in Objective-C is near a selector namespace that I worried about since before. Though I can understand the basic concept of selector namespace, I have not been imagined the concrete behavior(and implementation). It is welcome that there is something to refer.
However, I have not understood the specification well in as far as I search by google. Is there a specific example for a concrete behavior and implementation?
Anew I read the page I googled, it’s not said that the enable range is static scope. If so, is Category a “Mix-in that cannot be added a instance variable”? It is regrettable when that.
I welcome the information.