By Joost Visser, Sylvan Rigal, Gijs Wijnholds, Pascal van Eck, Rob van der Leek
Have you felt pissed off operating with somebody else's code? Difficult-to-maintain resource code is a giant challenge in software program improvement this day, resulting in high priced delays and defects. join the answer. With this functional publication, you are going to examine 10 easy-to-follow directions for offering C# software program that is effortless to keep up and adapt. those guidance were derived from interpreting 1000's of real-world structures. Written by way of specialists from the software program development crew (SIG), this publication offers transparent and concise motives, with suggestion for turning the information into perform. Examples for this variation are written in C#, whereas our significant other Java ebook presents transparent examples in that language.
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Extra info for Building Maintainable Software, C# Edition: Ten Guidelines for Future-Proof Code
A unit is always executed as a whole. It is not possible to invoke just a few lines of a unit. Therefore, the smallest piece of code that can be reused and tested is a unit. Consider the code snippet presented next. Given a customer identifier in a URL, this code generates a list of all of the customer’s bank accounts along with the balance of each account. The list is returned as a string formatted according to the JSON stan‐ dard, and also includes the overall total balance. It checks the validity of the bank account numbers using a checksum and skips invalid numbers.
Info | 35 • &&, || • while • for , foreach • catch So how can we limit the number of branch points? Well, this is mainly a matter of identifying the proper causes of high complexity. In a lot of cases, a complex unit consists of several code blocks glued together, where the complexity of the unit is the sum of its parts. In other cases, the complexity arises as the result of nested if-thenelse statements, making the code increasingly harder to understand with each level of nesting. Another possibility is the presence of a long chain of if-then-else state‐ ments or a long switch statement, of which the GetFlagColors method in the intro‐ duction is an example.
That means that well before you reach 15 lines of code, you need to start thinking about how to add further functionality. Does it really belong in the unit you are writing, or should it go into its own unit? When a unit grows beyond 15 lines of code despite your efforts, you need to shorten it. When Writing a New Unit Assume you are writing a class that represents a level in CsPacMan, the codebase we use for a number of examples in this book. See the sidebar “About CsPacMan” on page 16 for an introduction to it.
Building Maintainable Software, C# Edition: Ten Guidelines for Future-Proof Code by Joost Visser, Sylvan Rigal, Gijs Wijnholds, Pascal van Eck, Rob van der Leek