This web site is for programmers who are looking for sample code that demonstrates how to perform various tasks, from introductory 'Hello World' type tasks to more complex tasks, as well as specific code snippets that show how to do common tasks. There are also articles which attempt to clarify and explain how certain things work, and a tools section that contains interactive utilities.
A "Nice Clean Example" only contains just what you need for that demonstration or task, so what isn't included in each sample is as important as what is. Each is stripped to only include what is essential. No error checking, not all variables are declared, etc. Just the bare bones. You came here to see how to do something specific. The goal is copy, paste and go!
All code is free, with the usual request not to simply bundle up the entire web site and resell it.