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πŸ‘Ά Β Children (ELI5)

Hey there, young explorers! Are you ready for an amazing adventure into the world of programming? Today, we're going to dive into the magical realm of Go, a programming language designed to make our coding lives easier and more fun. So, buckle up and prepare to be amazed as we unveil the secrets and wonders of Go!

Once Upon a Time... The Story of Go πŸ“œ

In a land far, far away (more precisely, at Google), three brave heroes named Robert Griesemer, Rob Pike, and Ken Thompson decided to create a new programming language that would help programmers overcome the challenges of modern software development. It all started around 2007, and by 2009, Go was officially born!

From that moment on, Go has grown and evolved, helping programmers around the globe build fast, reliable, and efficient software. And guess what? Now it's your turn to join the league of Go developers!

Say 'Hello' to Go! πŸ‘‹

Every great journey begins with a single stepβ€”or, in this case, a single line of code! Let's start by writing the classic 'Hello, World!' program in Go:

package main

import "fmt"

func main() {
    fmt.Println("Hello, World!")

Let's break down what's happening here:

  1. package main: This tells Go that this code is the starting point of our program.
  2. import "fmt": This brings in the "fmt" package, which helps us with input and output.
  3. func main() { ... }: This is the main function where our program begins.

And that's it! You've just written your first Go program!

Go-pher Your Variables and Data Types 🐹

In Go, we can store and manipulate all sorts of data, like numbers, letters, and even entire sentences. Let's take a look at some of the most common data types in Go:

  • Integers: Whole numbers, like 42 or -7.
  • Floats: Decimal numbers, like 3.14 or -0.001.
  • Booleans: True or False values.
  • Strings: Text, like "Hello, Gophers!"

Now, let's see how we can create variables to store these values in Go:

package main

import "fmt"

func main() {
    var age int = 10
    var pi float64 = 3.14
    var isCodingFun bool = true
    var message string = "Go is awesome!"

    fmt.Println("Age:", age)
    fmt.Println("Pi:", pi)
    fmt.Println("Is coding fun?", isCodingFun)
    fmt.Println("Message:", message)

In this example, we first declare the variable name and its type, then assign a value to it using the equals sign =. Go also has a nifty trick called "short declaration" that makes declaring and assigning variables even easier:

age := 10
pi := 3.14
isCodingFun := true
message := "Go is awesome!"

Making Choices with If, Else, and Switch πŸ€”

Sometimes our programs need to make decisions based on certain conditions. That's where control structures like if, else, and switch come in handy. Let's try them out:

package main

import "fmt"

func main() {
    age := 10

    if age < 13 {
        fmt.Println("You're a kid!")
    } else if age < 18 {
        fmt.Println("You're a teenager!")
    } else {
        fmt.Println("You're an adult!")

    favoriteFruit := "apple"

    switch favoriteFruit {
    case "apple":
        fmt.Println("Apples are delicious!")
    case "banana":
        fmt.Println("Bananas are great!")
        fmt.Println("All fruits are awesome!")

Here, we use if, else if, and else to check the value of the age variable and print a message accordingly. We also use a switch statement to handle different values of the favoriteFruit variable.

Go Loopy with For Loops πŸ”„

Loops are incredibly useful when we need to repeat a piece of code multiple times. In Go, we have a versatile loop called the "for loop." Let's see it in action:

package main

import "fmt"

func main() {
    for i := 1; i <= 10; i++ {
        fmt.Println("Iteration", i)

In this example, the loop starts with i equal to 1 and continues as long as i is less than or equal to 10. After each iteration, i is incremented by 1 (i++) until it reaches 11, at which point the loop stops.

Functions Make the Go World Go Round 🌍

Functions are the building blocks of any program. They help us break down complex tasks into smaller, more manageable pieces. In Go, we can create our own functions like this:

package main

import "fmt"

func greet(name string) {
    fmt.Println("Hello,", name, "!")

func add(x int, y int) int {
    return x + y

func main() {
    result := add(10, 20)
    fmt.Println("10 + 20 =", result)

In this example, we define two functions: greet, which takes a name as an argument and prints a greeting, and add, which takes two integers as arguments and returns their sum. We then use these functions in our main function.

Go Forth and Explore! 🌈

And there you have it, a marvelous introduction to the world of Go! But this is just the beginning. There are many more fantastic features, libraries, and tools waiting for you to discover. So keep experimenting and having fun with Go, and who knows? Maybe one day you'll create something truly magical.

Happy coding! is a collection of articles on a variety of technology and programming articles assembled by James Padolsey. Enjoy! And please share! And if you feel like you can donate here so I can create more free content for you.