Writing a Basic CLI Application Using Go Go is a great language for building command-line tools due to its simplicity and powerful standard library. In this article, we will go through how to create a simple CLI app in Go that accepts commands and flags from the user. Step 1: Install Go Before you start, ensure that Go is installed on your machine. You can download it from here . Once installed, verify by running: go version Step 2: Set Up Your Project Create a new folder for your project and navigate into it: mkdir cli-app cd cli-app Step 3: Write Your CLI App In your project folder, create a file called main.go . This is where we'll write our CLI code. package main import ( "flag" "fmt" "os" ) func main() { name := flag.String("name", "World", "a name to say hello to") flag.Parse() if len(os.Args) < 2 { fmt.Println("Usage:
Why Interfaces are Awesome in Go Language Go, or Golang, is known for being a simple, yet powerful programming language. One of the core concepts that makes Go stand out is interfaces . Interfaces in Go help you write flexible, reusable, and maintainable code. They allow different types to share common behaviors without worrying about the exact type behind the scenes. In this article, we'll dive into why interfaces are awesome, with easy-to-understand examples. We’ll also give some tips on how to make the best use of them in your Go programs. What is an Interface? An interface in Go defines a set of method signatures (rules), but it doesn't provide the implementation. Instead, any type that implements these methods can be said to "satisfy" the interface. This allows you to write code that can work with different types as long as they share certain behaviors. Basic Example of an Interface package main import "fmt" // Define an interface with