Object diagram in book?


What is the methodology (or combo) followed for the Class diagrams in the book?
any suggested reading material?


And is there a tool to create these?
What it be a good idea to create such diagrams when start building own apps?


You can use OmniGraffle (http://www.omnigroup.com/products/omnigraffle/)


In the beginning of Chapter 5 in iOS Programming (I’m using the third edition), there is a brief but helpful explanation of an MVC diagram!


These diagrams helps you, how to create the classes and how it will work.