GO - Hello World!

// hello_world.go

package main

import (
    "fmt"
    "runtime"
    "time"
    "log"
)

func main() {
    defer executionTimer(time.Now(), "HelloWorld")

    fmt.Println("Hello world from", runtime.GOOS)
}

func executionTimer(start time.Time, name string) {
  fmt.Println()
  log.Printf("➜ ❝%s❞ took %s to execute.", name, time.Since(start))
}

To run above script, use go run hello_world.go (compile and run) or use go build hello_world (only compile).