Go Comments

Comments in Go are non-executable lines of text that help explain the code, improve its readability, or temporarily disable portions of it for testing and debugging. Go offers two types of comments: single-line and multi-line.

Go Single-line Comments

Single-line comments begin with //. Any text following // on the same line is ignored by the compiler.

Example:

This program demonstrates the use of single-line comments:

// This program displays a message about Yamaha
package main

import ("fmt")

func main() {
  // Printing a Yamaha-themed message
  fmt.Println("Experience the thrill with Yamaha!")
}

// This program displays a message about Yamaha

package main

​

import ("fmt")

​

func main() {

  // Printing a Yamaha-themed message

  fmt.Println("Experience the thrill with Yamaha!")

}

Single-line comments can also be placed at the end of a code line:

package main

import ("fmt")

func main() {
  fmt.Println("Honda: The Power of Dreams!") // Displays Honda's tagline
}

package main

​

import ("fmt")

​

func main() {

  fmt.Println("Honda: The Power of Dreams!") // Displays Honda's tagline

}

Go Multi-line Comments

Multi-line comments are enclosed within /* and */. They are perfect for providing detailed descriptions spanning multiple lines.

Example:

This program includes a multi-line comment to describe its purpose:

/* This program introduces Suzuki's spirit
and prints a message highlighting the brand. */
package main

import ("fmt")

func main() {
  fmt.Println("Suzuki: Way of Life!")
}

/* This program introduces Suzuki's spirit

and prints a message highlighting the brand. */

package main

​

import ("fmt")

​

func main() {

  fmt.Println("Suzuki: Way of Life!")

}

Commenting to Disable Code Execution

Comments can also be used to prevent certain lines from executing, which is useful for testing alternative logic or debugging.

Example:

In this program, one line of code is disabled:

// This program demonstrates how to disable code
package main

import ("fmt")

func main() {
  fmt.Println("This line is active and will execute.")
  // fmt.Println("This line is commented out and won't execute.")
}

// This program demonstrates how to disable code

package main

​

import ("fmt")

​

func main() {

  fmt.Println("This line is active and will execute.")

  // fmt.Println("This line is commented out and won't execute.")

}

Tips for Using Comments

• Use single-line comments (//) for brief annotations or explanations.
• Use multi-line comments (/* ... */) when more extensive notes or documentation are required.
• Temporarily disable code using comments to simplify testing and debugging.