Chapter 8. Understanding the Cocoa Framework
Up until this point in the book, you've been learning the basic principles of programming. First, you learned about the three basic building blocks of programming (sequential instructions, branches, and loops). Next, you learned about Boolean expressions, mathematical operators, variables, and constants.
While it's perfectly possible to create a program using what you've learned so far, programming for the Mac is much harder because you have to write code to create and display your user interface, code to perform common functions, and code to make your program do something unique.
To make Mac programming easier, Apple provides a library of prewritten and tested code, organized in something called the ...
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