Explore fun brain teasers to hone your logic, critical thinking, and problem-solving skills. Gain insights into Go and practice to avoid future mistakes.

go.tar.gz

Go lang

Who knew puzzles could be fun? Puzzles and brain teasers are a great way to practice your critical thinking and improve your logic and problem-solving skills. This course provides a basic understanding of Go. The teasers in this course will help you practice what you already know and help avoid future mistakes.

Go Brain Teasers

# Try it yourself ##
Try executing the code below to see the result for yourself.

package main

import (
	"fmt"
)

func init() {
	fmt.Printf("A ")
}

func init() {
	fmt.Print("B ")
}

func main() {
	fmt.Println()
}


# Explanation ##
In Go, `init` presents a particular case. We cannot define two functions with the same name in the same package in Go compiler. However, `init` is different.

>Go’s documentation describes it like this:  “Multiple such functions may be defined per package, even within a single source file. In the package block, the `init` identifier can be used only to declare `init` functions, yet the identifier itself is not declared. Thus, `init` functions cannot be referred to from anywhere in a program.”

 

Before We Begin

Puzzles

Wrapping Up

Puzzle 21 Explanation: init Is Special

Try it yourself

Explanation