Migrate guuid.

code/tool/uuid/example_test.go

@@ -0,0 +1,33 @@
+package uuid_test
+
+import (
+	"fmt"
+	"github.com/eyebluecn/tank/code/tool/uuid"
+)
+
+func ExampleNewV4() {
+	u4, err := uuid.NewV4()
+	if err != nil {
+		fmt.Println("error:", err)
+		return
+	}
+	fmt.Println(u4)
+}
+
+func ExampleNewV5() {
+	u5, err := uuid.NewV5(uuid.NamespaceURL, []byte("nu7hat.ch"))
+	if err != nil {
+		fmt.Println("error:", err)
+		return
+	}
+	fmt.Println(u5)
+}
+
+func ExampleParseHex() {
+	u, err := uuid.ParseHex("6ba7b810-9dad-11d1-80b4-00c04fd430c8")
+	if err != nil {
+		fmt.Println("error:", err)
+		return
+	}
+	fmt.Println(u)
+}