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Did you know that in 1999, NASA's Mars Climate Orbiter was destroyed due to a software bug caused by low code readability costing $320 million?
Having readable code is probably one of the top priorities for companies these days; it's so remarkable that, without knowing, when you improve readability, you are also applying almost every other metric about coding standards and guidelines in the industry.
🤯 "Any fool can write code that a computer can understand. Good programmers write code that humans can understand." - Martin Fowler
Code readability refers to how easily any person can understand the purpose, structure, and operation of a piece of code. Code that is easy to read and understand is more maintainable and easier to modify or update, and it is less likely to contain errors or bugs.
🤯 "Code is read much more often than it is written." - Guido van Rossum (creator of the Python programming language)
Poor code readability can lead to several problems that can cost a company money:
Increased debugging time: If code is difficult to read and understand, it can take longer to identify and fix bugs, which can increase the amount of time and resources needed to debug the code. This can lead to increased project costs and delays.
Difficulty maintaining code: If code is difficult to read and understand, it can be difficult for new developers to make changes or updates to the code. This can lead to increased development costs and delays as developers spend more time trying to understand the code.
Increased risk of errors: If code is difficult to read and understand, it is more likely that errors or bugs will be introduced as the code is modified or updated. These errors can cause the program to malfunction, leading to lost productivity and potentially lost revenue.
In this lesson, we will go over a few tips you can follow to improve the readability of your code.
Where do I start? This is one of the most difficult tasks in coding.
Instead of nesting blocks of code, consider refactoring the code into smaller functions and calling those functions at the appropriate times. This can reduce the overall depth of nesting in your code.
It's better to combine your conditions in related logical operations.
I challenge you to find the problem!
When you are about to add a comment, think for a second: Do I need this comment? Can I increase readability to avoid it?
99% of the time, there is no need for comments if your code has good readability and follows best practices.
This usually happens when writing a long string or if statement, it can also occur when writing functions with long names.
You can avoid most of these problems by using a code prettier. This is a friendly reminder to install a prettier in your editor if you don't have one already.
Other cases to avoid long lines of code:
Software developers are expected to produce high-quality code that is reliable, maintainable, and free of errors or bugs.
It is important to write clean, well-written, and well-documented code that is easy to read and understand. This will make the code more maintainable and will reduce the risk of errors, delays, and increased costs.