Self-documenting code

Self-documenting code means writing code that explains itself. Let's say you have a toy called a Rubik's Cube. You want to teach your friends how to solve it, so you write down the steps on a sheet of paper. That sheet of paper is like documentation. So, a self-documenting Rubik's Cube would be one that has the steps to solve it on the cube itself. That way, you don't need a separate sheet of paper to figure it out.

Similarly, when programmers write code, they want to make sure that it's easy for other people (and themselves!) to understand. One way to do that is to write comments - little notes that explain what the code does. But sometimes comments can be confusing or out-of-date. That's why it's better if the code itself is easy to read and understand without having to rely on comments. Code that is easy to read is called "self-documenting."

Here are some ways that code can be self-documenting:
- Using descriptive variable names, like "numberOfApples" instead of "a."
- Breaking up long functions and methods into smaller, easier-to-understand chunks.
- Writing code that follows a logical order, like alphabetical or chronological order, so it's easier to follow.
- Avoiding unnecessary complexity. Simple code is easier to read and understand than complicated code.
- Using conventions and standards that are familiar to other programmers. For example, indenting code in a certain way or using specific terminology.

Basically, self-documenting code is like a Rubik's Cube that solves itself - it's easy to understand and follow without needing extra help.