Reto #23 - go

hozlucas28 · Aug 10, 2024 · 389a39a · 389a39a
1 parent 6f038fd
commit 389a39a
Showing 1 changed file with 34 additions and 0 deletions.
diff --git a/Roadmap/23 - SINGLETON/go/kodenook.go b/Roadmap/23 - SINGLETON/go/kodenook.go
@@ -0,0 +1,34 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+)
+
+type Singleton struct {
+	data string
+}
+
+var instancia *Singleton
+
+var once sync.Once
+
+func GetInstance() *Singleton {
+	once.Do(func() {
+		instancia = &Singleton{data: "Data example"}
+	})
+	return instancia
+}
+
+func main() {
+
+	singleton := GetInstance()
+	fmt.Println(singleton.data)
+
+	other := GetInstance()
+	fmt.Println(other.data)
+
+	singleton.data = "New data"
+
+	fmt.Println(other.data)
+}