Single-responsibility principle

The single-responsibility principle (SRP) is a computer programming principle that states that "A module should be responsible to one, and only one, actor."

• Rule of one

Rule of one

Apply the single responsibility principle (SRP) to all components, services, and other symbols. This helps make the application cleaner, easier to read and maintain, and more testable.

Do define one thing, such as a service or component, per file.

The goal is to make the code more reusable, easier to read, and less mistake-prone. As the application grows, this rule becomes even more important.