How do I write comments and documentation for Go packages?

In Go, comments and documentation are essential for creating clear and maintainable code. Go uses two types of comments:

  • Single-line comments: These start with two slashes (//) and continue until the end of the line.
  • Multi-line comments: These are enclosed between /* and */.

For documentation, Go uses a specific format that allows you to document your packages and functions. It's best practice to document exported identifiers (i.e., those that start with an uppercase letter). The comment should be placed directly above the identifier.

Here’s an example of how to write comments and documentation for a Go package:

// Package math provides basic constants and mathematical functions. package math // Pi is the ratio of the circumference of a circle to its diameter. const Pi = 3.14 // Sqrt returns the square root of x. func Sqrt(x float64) float64 { return x * x // Squaring x }

Go comments documentation Go packages coding standards programming software development

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