initial import

best-practices/context-value-nono/main.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"context"
+	"fmt"
+)
+
+type contextKey int
+
+const usernameKey contextKey = iota
+
+func businessCall(username string) {
+	//.. was wichtiges
+	fmt.Println(username)
+}
+
+func main() {
+	ctx := context.Background()
+	vCtx := context.WithValue(ctx, usernameKey, "bob")
+	//.. einiges anderes
+	businessCall(vCtx.Value(usernameKey).(string))
+
+	//Variante2
+	username := "bob"
+	//.. einiges anderes
+	businessCall(username)
+
+}