Consistent Coding Styles: The Key to Readable Code
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Chapter 1: The Importance of Consistency in Coding
Writing code can be challenging. Numerous issues can arise, from syntax errors to incorrect data handling, and even flawed logic. A small mistake, like omitting a semicolon, can lead to your code failing. Moreover, writing code that others can read and understand is even more difficult.
When your code is messy, it becomes hard for others (and sometimes even yourself) to interpret it. This issue often manifests in junior developers, who tend to focus solely on making their code functional without considering that someone else will need to work with it in the future. Fortunately, there’s a simple principle that can help create code that is both readable and maintainable: consistency.
Consistency is one of the most valuable principles in programming. Adopting a uniform coding style not only makes your code easier to read but also spares you future frustration. The absence of consistency in a large codebase can be a nightmare for new developers who are trying to navigate through it.
Section 1.1: Style Consistency
For a codebase to appear cohesive, it should look like it was authored by a single individual. Different languages, frameworks, and teams often have their own style guides, which can significantly improve your coding practices.
For example, when defining an array, I prefer placing each element on its own line. This approach enhances readability:
// Unstyled
myArray = ['longVarName', 'anotherLongVarName', 'thisIsCluttered'];
// Styled
myStyledArray = [
'longVarName',
'anotherLongVarName',
'thisIsEasierToRead',
];
This practice becomes even more critical when a function requires many parameters. Aligning each parameter on separate lines can vastly improve clarity:
// Less readable
doesThisLookGood(param0=50000, param1='Hello World', param2=[1, 2, 3], param3=true);
// More readable
doesThisLookBetter(param0=50000,
param1='Hello World',
param2=[1, 2, 3],
param3=true);
Subsection 1.1.1: Consistent Naming Conventions
Establishing a naming convention is essential. Regardless of the project, you should always adhere to a consistent naming style. Just as you wouldn't name your dog "Kitty," you shouldn't create arbitrary names for your variables.
Choose between camel case or snake case based on your programming language's conventions and your team’s guidelines. Variable names should clearly represent the data they hold, while function names should describe their functionality. This makes it easier to understand your code at a glance.
For instance, maintain consistent naming across similar variables:
// Poor Naming
u1 = 'John';
user2 = 'Kristian';
u3 = 'Aaron';
// Good Naming
user1 = 'John';
user2 = 'Kristian';
user3 = 'Aaron';
Don’t hesitate to use longer, descriptive variable names. Clarity is more important than brevity.
Section 1.2: File and Structural Consistency
Choosing meaningful names for your files can save you significant time. In larger codebases, it's common to have numerous files interacting with one another, making it challenging to locate specific files or functions. A consistent file naming and directory structure is crucial for efficient navigation.
Whenever you embark on a new project, you may start with just a few files. However, as the project expands, maintaining a well-organized file directory becomes vital. For example, in ReactJS, we typically organize components, hooks, and assets into separate folders. This practice prevents confusion later on when you revisit your code.
Here’s an example of a properly structured function:
function getFinalData() {
fetchRawData();
processData();
formatData();
}
function fetchRawData() {
// Logic to fetch data
}
function processData() {
// Logic to process data
}
function formatData() {
// Logic to format data
}
Following a consistent hierarchy in your functions and classes will simplify the process for both you and your collaborators.
Chapter 2: Enhancing Your Coding Skills
In this video, Anshika Gupta shares insights on how to maintain consistency in coding and speed up your coding skills.
This video discusses the principles of writing clean code in JavaScript, focusing on best practices for readability and maintainability.
Remember, writing clean and readable code is a skill that develops over time. Embrace the journey of learning to code and improving your coding practices.