GO Tutorial

Comments in Go

Comments are used to explain code, make notes, or temporarily disable parts of code. They are ignored by the Go compiler.

Single-line Comments

Use // for single-line comments. Everything after // on the same line is treated as a comment:

// This is a single-line comment
fmt.Println("Hello, Go!")
  

Multi-line Comments

Use /* */ to write multi-line or block comments:

/*
This is a multi-line comment.
It can span multiple lines.
Useful for longer explanations.
*/
fmt.Println("Hello, Go!")
  

Interactive Example: Toggle Comment Visibility

Click the button below to toggle a sample comment on/off (simulated):

// This comment is now visible!
// Comments help you and others understand your code better.
  

Best Practices for Comments

• Write clear and concise comments.
• Avoid obvious comments (don’t comment what is self-explanatory).
• Use comments to explain why something is done, not just what.
• Keep comments updated as you change your code.