initial commit

goroutines/goroutines.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func f (from string){
+	for i := 0; i<3; i++ {
+		fmt.Println(from,":",i)
+	}
+}
+
+func main(){
+	//suppose we have function call f(s)
+	//here is how wed call that in the usual way
+	//running it synchronously
+	f("direct")
+
+	//To invoke this function in a goroutine, use go f(s)
+	//This new goroutine will execute concurrently with the calling one
+	go f("goroutine")
+
+	//you can also start a goroutine for an anonymous function call
+	go func (msg string) {
+		fmt.Println(msg)
+	}("going")
+
+	//our two function calls are running async in seperate goroutines now.
+	//wait for them to finish (for a most robust approach use a WaitGroup)
+	time.Sleep(time.Second)
+	fmt.Println("done")
+}