From 65714e30cbfa1af1bc561f7f32224381722f032e Mon Sep 17 00:00:00 2001
From: Anh Tuan Le <letuananh.ttmmt.ctu@gmail.com>
Date: Sun, 31 Aug 2025 20:40:31 +0700
Subject: [PATCH] feat(playground): add initial main.go with goroutine example

- Implement a simple Go application that prints "Hello, World!"
- Introduce a goroutine that demonstrates a potential goroutine leak and race condition
- Include a sleep mechanism to illustrate concurrent execution
---
 cmd/playground/main.go | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 cmd/playground/main.go

diff --git a/cmd/playground/main.go b/cmd/playground/main.go
new file mode 100644
index 0000000..8cecad2
--- /dev/null
+++ b/cmd/playground/main.go
@@ -0,0 +1,21 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func main() {
+	fmt.Println("Hello, World!")
+
+	// A goroutine which cause goroutine leak
+	//  this goroutines should cause race condition
+	message := "Hello, World!"
+	go func(s string) {
+		time.Sleep(10 * time.Second)
+		fmt.Println(s)
+	}(message)
+
+	time.Sleep(1 * time.Second)
+	fmt.Println(message)
+}