Guidelines for Good Sample Code
Sample code often provides the quickest, clearest way to learn how an SDK works. If you have software engineering experience, then you should already know many principles for writing good code. However, what you may not realize is that some of the good practices that you learned for writing good production code do not apply to writing good sample code. Some techniques, such as comments and clear variable names, apply to both production code and sample code. However, there are good reasons to use hard-coded values in sample code, which should be avoided in production code, and there are good reasons to avoid object-oriented designs when writing sample code.
Gruenbaum, Peter. Prestwood (2009). Articles>Software>SDK>Documentation