优化range引用

panic/panic_test.go

@@ -0,0 +1,32 @@
+package panic
+
+import (
+	"context"
+	"fmt"
+	"testing"
+	"time"
+)
+
+func TestPanic(t *testing.T) {
+	defer func() {
+		t.Log("捕捉异常")
+		if e := recover(); e != nil {
+			if err, ok := e.(error); ok {
+				t.Log(err.Error())
+			}
+			t.Log("格式化:", e)
+		}
+	}()
+
+	g := NewPanicGroup(10)
+	g.Go(func() {
+		panic("1243")
+	})
+
+	if err := g.Wait(context.Background()); err != nil {
+		panic(err)
+	}
+
+	time.Sleep(1 * time.Second)
+	fmt.Println("这条消息可打印")
+}