Checking the excellence of software code has a significant impact on the success of any project. As with other ways to improve application code quality, different verification procedures need to be applied to the program source code during development.
This is a new trend because performing verification in the early stages is probably the most important measure to improve quality of code and reduce development time.
And to do this, you will, first of all, need a guarantee of secure and reliable cloud operations, like those provided by different DevOps services.
Best Ways to Improve APP Code Quality
1. Separation of concerns
A striking example of how to improve code quality in team. Let’s compare the creation of code with the procedure of cooking.
If you take a complex recipe, there are two boiling pots on the stove at the same time, a plate rotates in the microwave, and you have three types of vegetables, mills with different spices, this will cause real stress.
In addition, there is another chef in the kitchen. You have to spend time coordinating, passing things back and forth, fighting for space at the stove, and adjusting everything. Doing all this takes practice.
The best option is to divide the recipe into sub-recipes. They are called “modules” or “classes” in code. Each module is associated with a specific operation or piece of data. Their concerns are divided.
2. Global variables as a way of how to improve code app quality
Take, for example, the username variable. While creating a login form in an application, you suddenly decide that the username will be used in several places in the application, for example, on the login page and in the settings.
Therefore, we made this variable global. In Python, it is referred to as global, while in JavaScript, it is a property of the window object. But why not make all variables global?
The solution to the problem is to put the username in a container that is injected or passed as an argument to classes and methods that need it.
The data you need will always be in only one place. And if you need to keep track of when a piece of code or data has changed, you can always use a getter or setter.
3. Don’t repeat yourself
That is, every time you copy and paste code more than once, think maybe you are doing something wrong. Maybe it’s time to refactor.
The bottom line is that if an operation needs to change, you only need to change one class or method. This is faster and more reliable than trying to keep multiple copies of the same code, which ends up taking a long time to make changes, and if you skip a line or two, it can cause problems that can be difficult to diagnose.
4. How to improve quality of application code by hiding complexity
When you create a class or method, the first thing you need to create is an interface, that is, a piece of code that another piece of code (the caller) needs to know in order to use that class or method.
For a method, this is also called a signature. Every time you look at a function or class in the API documentation (such as on MDN or jquery.com), you see an interface—everything you need to know to use it without the code it contains.
The interface should be simple yet expressive. Everything should be clear without words. The calling function should not know the order of execution of events or data for which it is not responsible.
