11 Write Clean Code Building Maintainable Software, C# Edition Book

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After C# 6.0 string interpolation is preferable, cleaner and more efficient way to interpolate dynamic values in strings. Many times we would have encountered the following type of coding for checking an object for null before accessing one of its members. There are some cases where a goto statement is useful and, perhaps, even recommended, but when you can, avoid its use, as it can make the program flow difficult to understand.

You may have a tight deadline to meet, but comments such as // I know this code sucks but hey at least it works! It shows a lack of professionalism and can really disgruntle fellow programmers. Understand how coding principles enhance software quality. Understand why bad code negatively impacts projects.

They should help you understand what they are used for. For example, if you’re working on a project that has a class named Order, you might use a variable name like existingOrder. Based on the variable’s name, you can probably figure out that it contains an existing order. And it probably belongs to the code that updates the orders in the system.

When functions do more than one thing, they are harder to compose, test, and reason about. When you can isolate a function to just one action, they can be refactored easily and your code will read much cleaner. If you take nothing else away from this guide other than this, you’ll be ahead of many developers. If you can do this, you will be happier than the vast majority of other programmers. Software engineering principles, from Robert C. Martin’s book Clean Code, adapted for .NET/.NET Core. It’s a guide to producing readable, reusable, and refactorable software in .NET/.NET Core.

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Most Leanpub books are available in PDF and EPUB . The formats that a book includes are shown at the top right corner of this page. Using a naming convention is a great way to get started — it keeps things clear and lets you know exactly what you’re working with. Well, the name of a function must start with a verb.

how to write cleaner code in C#

They can be unpleasant at times, but peer code reviews help to keep programmers in check by making sure they are adhering to the company coding procedure. When you declare variables, you should always use static types such as an interface or abstract class. Concrete classes that implement the interface or inherit from the abstract class can then be assigned to the variable. If you find that you are writing the same code in multiple areas, then this is a definite candidate for refactoring. You should look at the code to see if it can be genericized and placed in a helper class for use throughout the system or in a library for use by other projects.

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Writing good code is a skill that you can learn, and it’s a skill that every programmer should possess. While on other hand things having single responsibility are easy to maintain. Having too many parameters for methods is irritating. If too many parameters are required, then instead of providing those values individually you can wrap then in an object and accept the object instead. If you are seeing your code after a long time, then there are chances you even can get confused about the use of your variables. Always declare your variables close to where you use them.

how to write cleaner code in C#

At that stage, I was learning to manage basic things and now, I am learning to handle the problems. Everyday, we learn something, whether it’s from reading articles, watching videos, or by our own mistakes or success in this programming environment. A big program can be rather unwieldy to understand and maintain.

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When possible, use other control structures such as break, continue, for, or even an if. To begin, there is no real definition of clean code; if asked, every programmer will likely have their own definition and rules. Some of those thoughts will, of course, overlap, and from that overlap, we can loosely define what clean code is. StyleCop provides value by enforcing a common set of style rules for C# code. StyleCop will continue to ship with a single, consistant set of rules, with minimal rule configuration allowed.

If you wrap any bit of code in a try/catch it means you think an error may occur there and therefore you should have a plan, or create a code path, for when it occurs. There’s a lot to learn about async and await, and it’s natural to get a little disoriented. Here’s a quick reference of solutions to common problems. There’s plenty of good .NET test frameworks, so find one that your team prefers.

how to write cleaner code in C#

Expression bodied methods are preferred to use in cases where your method definition is greater than actually method body. In expression-bodied methods instead of writing the whole method body we make use of lambda arrow to return from method in one line. String interpolation will create https://globalcloudteam.com/ only one object of string on heap in that case. In the above example there are two null-conditional operators, one checks null in the employee object and another checks null in the address object present inside the employee. If any one is null then addressID will be set to null.

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CodeGuru covers topics related to Microsoft-related software development, mobile development, database management, and web application programming. Cloud services such as Microsoft Azure and database options including SQL Server and MSSQL are also frequently covered. Writing Clean and Scalable Code is not easy as well. In this article, how to write cleaner code in C# we will talk about 20 Tips to write Clean C# Code for your projects. In a conversation with a senior, she said ‘Your codebase should look like a storybook.’ That’s a quite simple way to put things. What it means is that, at first glance, any developer that has never seen your code before, has to understand it as much as possible.

  • Easily the most frustrating thing for another developer looking at your code is seeing a variable with a misleading name or, worse, named with a single letter.
  • In the above example, the AddressDetails method has all the properties that the SaveHomeAddress needs.
  • Like the previous example, you might need to write to a file.
  • This reduces the maintenance overhead and so reduces the overall cost of maintenance.
  • It sounds like you’re changing code and can be dangerous, right?

This is something we all developers Hate, don’t we? 😀 However, adding a few lines of comments/description of what the method actually does helps you and the other developers in the longer run. Simply Go above the concerned method and type in ///, VS automatically generates a comment template for you including the arguments of the method.

The very fact that your code has been programmed to expect one or more exceptions shows your design to be wrong. A typical scenario that is covered in more detail in Chapter 5, Exception Handling. Don’t use underscores between words in a name either, such asBad_Programmer. This can cause visual stress for developers and can make the code hard to read. I’ve seen programmers get really upset at comments that state the obvious as they find them patronizing.

If you want to become a better developer, you should read this article. It has 31 of the best tips for writing clean code in C#, compiled from experts in the software development field. If writing clean C# code means writing code that is readable and understandable, then making sure you properly comment your code only makes sense. This should be a part of your best coding practices anyway – for your own sake if not every one else’s that will ever view or work with your applications.

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Large methods are not nice to read and understand. Another problem with large methods is they can lose sight of their original intent. It’s even worse when you come across large methods that have sections separated by comments and code wrapped in regions. Don’t use the same code convention for variables at the class level and method level. This can make it difficult to establish the scope of a variable. Improper indentation can work toward making code really hard to read, especially if the methods are large.

Never save unused code

Loosely coupled code is easier to test and refactor. You can also swap and change loosely coupled code more easily if you need to. Code reuse is another benefit of loosely coupled code.

Getting the abstraction right is critical, that’s why you should follow the SOLID principles laid out in the Classes section. Bad abstractions can be worse than duplicate code, so be careful! Having said this, if you can make a good abstraction, do it! Don’t repeat yourself, otherwise you’ll find yourself updating multiple places anytime you want to change one thing. A good example to look at that demonstrates this principle is for classes that require large settings objects.

Bad code is code that has not been built with care. It is often rushed and put together in a way that doesn’t make sense. But this can make the life of the programmer that has to maintain it more difficult. Poorly written code can be challenging to read and understand, leading to mistakes and frustration. On the other hand, clean code is also easier to debug and fix when there are problems. In this article, we will discuss some very cool tips for writing clean and concise in C# code for more maintainability and understanding.

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Then when variable names or method names change, it gets irrelevant but still nobody deletes it. It is a common misconception that you should hide your mess with comments. Do not use letters like x, y, a, or b as variable names unless there is a good reason . Improve your knowledge in object-oriented programming in the context of clean coding and building types of high quality.

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