Go is a modern programming language that has gained popularity in recent years. Known for its simplicity, efficiency, and strong support for concurrent programming, Go has become a favorite among developers for building scalable and high-performance applications. If you’re new to Go or looking to level up your skills, learning by example is a great way to get started. In this article, we’ll explore some must-try code snippets that will help you understand the power and elegance of Go programming.
1. Hello, World!
Let’s start with the classic “Hello, World!” program. In Go, it’s just a single line of code:
“`go
package main
import “fmt”
func main() {
fmt.Println(“Hello, World!”)
}
“`
This program demonstrates the basic structure of a Go program. The `main` function is the entry point of the program, and `fmt.Println` is used to print the text to the console.
2. Variables and Constants
Go has a strong type system, which means you need to declare the type of variables explicitly. Here’s an example that demonstrates variable declaration and initialization:
“`go
package main
import “fmt”
func main() {
var name string = “John”
age := 30
fmt.Println(“Name:”, name)
fmt.Println(“Age:”, age)
}
“`
In this example, we declare a variable `name` of type `string` and initialize it with the value “John”. We use the `:=` syntax to declare and initialize the `age` variable without explicitly specifying its type.
3. Loops and Conditionals
Go provides a few different types of loops and conditionals. Here’s an example that demonstrates the `for` loop and an `if` statement:
“`go
package main
import “fmt”
func main() {
for i := 1; i
