What recommendations are there for writing Go modules?

Recommendations for writing modules in Go:

• Cleanliness and simplicity of code: Go encourages simple and understandable code without unnecessary abstraction.
• Using packages: Divide functionality into packages with clearly defined interfaces.
• Naming: Follow Go idioms, use short but understandable names.
• Error handling: Always check errors and handle them explicitly.
• Documentation: Write comments for exported functions and types.
• Testing: Write unit tests for modules, use go test.
• Using interfaces: To increase flexibility and testability.
• Avoid global variables: Prefer passing dependencies explicitly.

Example of a simple module:

package calculator

// Add returns the sum of two numbers.
func Add(a, b int) int {
    return a + b
}

Such a module is easy to test and use in other parts of the program.