Best Practices

Techniques and Considerations for Cleaner Error Handling in your Program

Exceptions should be preferred over error codes as returning error codes will force you to have an “if” statement to check for error code, which may be confusing to some readers and there is also a chance that the caller may forget to check for error codes. If you use error codes, you will also need to have some class that defines all error codes and all classes that use those error codes will be dependent on this class.

Formatting the Lines of Code in your Program for Better Readability and Maintainability

Is formatting your code important? Formatting your code properly is as important as working code. Proper formatting increases readability and hence maintainability, and also give readers the impression that the code was written by professionals.  Let us quickly see some of the formatting issues from vertical as well as horizontal perspectives.


Vertical formatting

Vertical formatting deals with the vertical size and vertical distance between elements. Some of the tips for vertical formatting are worth to note. 

Writing Good Comments and Avoiding Bad Comments in your Program

Are comments needed in your programs? If your code is very clear and expressive, then you won’t ideally need comments. By naming your identifiers correctly you can avoid the need for comments in lot of places within your code. So why learn about writing good comments? Due to reasons including the limitations in expressiveness of a programming language, we may have to still use comments, and for these use cases we will need to learn to write good comments.


Naming the Identifiers Correctly in your Program

Is naming identifiers like classes, methods and variables important in developing clean code? It is.

Below is a set of simple rules that you can use as a quick reference to name your identifiers correctly:

  1. Use intention revealing names that can explicitly tell why it exists, what it does and how it is used, so that others can easily understand the code. E.g. int elapsedTimeInDays instead of int d.

Writing Cleaner Methods in your Program

Below simple list of principles and practices can help you write cleaner methods in your program:

  1. Methods should be as small as possible and should have descriptive names that explain its purpose without the need of any extra comments. Bigger methods should be refactored to move contents that can be grouped together, into other methods with descriptive names that reflect the task done by that method and then invoke those methods from the original method.


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