From 705b7d31e7486edd751f40bfa8d0d29b8c3f2ab9 Mon Sep 17 00:00:00 2001
From: Steve Fan <stevefan1999@gmail.com>
Date: Tue, 26 Dec 2017 20:20:32 +0800
Subject: [PATCH] Substitute the index generator into one function

---
 src/utils/Utils.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/utils/Utils.ts b/src/utils/Utils.ts
index d144b41e..d3c5b0f7 100644
--- a/src/utils/Utils.ts
+++ b/src/utils/Utils.ts
@@ -78,13 +78,15 @@ export class Utils {
     public static generateIden (): string {
         let validIden: string = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_';
         let ret: string = '';
+        
+        const idenIdx: (() => number) = () => Math.floor(Math.random() * validIden.length) % validIden.length;
 
-        ret += validIden[Math.floor(Math.random() * validIden.length) % validIden.length];
+        ret += validIden[idenIdx()];
         validIden += '0123456789';
         
         const len: number = Math.floor((Math.random() * 10) + 3);
         for (let i: number = 0; i < len; i++) {
-            ret += validIden[Math.floor(Math.random() * validIden.length) % validIden.length];
+            ret += validIden[idenIdx()];
         }
         
         return ret;