Code review guide for golang functions

Key points to follow when reviewing Go functions include: syntax and format, function signatures, functionality, error handling, unit testing, documentation, and best practices. Specifically, correct syntax and formatting should be used, function signatures should be clear, functions only do one thing, errors should be handled appropriately, unit tests should be written for each function, clear documentation should be provided, and best practices should be followed to ensure code quality , maintainability and readability.

Go Function Code Review Guidelines

As a Go developer, it is crucial to follow strict guidelines when reviewing code to ensure Code quality, maintainability and readability. This guide outlines the key points to follow when reviewing Go functions.

Syntax and Format

• Functions should use correct syntax and follow Go code formatting guidelines.
• Function names should be concise and reflect their functionality.
• Parameters and return types should be properly declared and documented.

Function signature

• Function signature should be clear and concise.
• Parameters should have appropriate names and follow the camelCase naming convention.
• Use named return values ​​whenever possible.

Function

• Every function should do only one thing.
• Code should be modular and reusable.
• Avoid side effects or state changes in functions.

Error handling

• Handle errors appropriately and return them when necessary.
• Use Sentinel error values ​​or error types to indicate specific situations.
• Fail gracefully on the wrong path.

Unit testing

• Write unit tests for each function to verify its correctness.
• Cover all code paths, including error handling and boundary conditions.
• Use assertions to verify expected behavior.

Documentation

• Functions should contain clear documentation explaining their purpose and how to use them.
• The description should include a description of parameters and return values.
• Use docstrings comment format whenever possible.

Best Practices

• Avoid using naked returns.
• Do not declare variables inside functions.
• Use the defer statement for resource cleanup.
• Track function complexity and try to keep it as low as possible.

Practical Case

The following is an example of a Go function that has been reviewed and improved:

// getArea 计算矩形的面积
func getArea(length, width float64) (float64, error) {
  if length <= 0 || width <= 0 {
    return 0, errors.New("invalid dimensions")
  }

  return length * width, nil
}

Conclusion

By following these guidelines, Go developers can ensure that functions are clear, maintainable, and testable, thereby improving the overall quality of their code.

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