Download e-book for kindle: ABAP Objects: Introduction to Programming SAP Applications by Horst Keller, Sascha Kruger

By Horst Keller, Sascha Kruger

The 1st publication to comprehensively disguise the hot object-oriented new release of SAP's programming language ABAP. Officially-approved consultant and connection with a middle SAP subject

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Extra resources for ABAP Objects: Introduction to Programming SAP Applications (SAP Press)

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That gives me a couple of interesting advantages. I can implement the functionality now with something simple, say a hash map, but since now all the references to that search are covered by my little abstraction, I can change the implementation any time I want. I can go forward quickly while preserving my ability to change later. In addition, the collection abstraction often calls my attention to what’s “really” going on, and keeps me from running down the path of implementing arbitrary collection behavior when all I really need is a few fairly simple ways of finding what I want.

What do I think clean code is? This book will tell you, in hideous detail, what I and my compatriots think about clean code. We will tell you what we think makes a clean variable name, a clean function, a clean class, etc. We will present these opinions as absolutes, and we will not apologize for our stridence. To us, at this point in our careers, they are absolutes. They are our school of thought about clean code. Martial artists do not all agree about the best martial art, or the best technique within a martial art.

Of course, a better solution is to create a class named Address. Then, even the compiler knows that the variables belong to a bigger concept. Consider the method in Listing 2-1. Do the variables need a more meaningful context? The function name provides only part of the context; the algorithm provides the rest. Once you read through the function, you see that the three variables, number, verb, and pluralModifier, are part of the “guess statistics” message. Unfortunately, the context must be inferred.

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