From ec276b274f1efeb294f53699a4ceb062cb74b9ef Mon Sep 17 00:00:00 2001
From: Justin Lin <justin.sdk@gmail.com>
Date: Sat, 5 Mar 2022 10:47:24 +0800
Subject: [PATCH] refactor

---
 src/__comm__/_str_hash.scad | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/src/__comm__/_str_hash.scad b/src/__comm__/_str_hash.scad
index 8bb53c4a..691c6bcd 100644
--- a/src/__comm__/_str_hash.scad
+++ b/src/__comm__/_str_hash.scad
@@ -1,11 +1,8 @@
 use <../util/sum.scad>;
 
 function _str_hash(value) = 
-    let(
-	    s = str(value),
-		leng = len(s)
-	)
+    let(s = str(value))
 	sum([
-	    for(i = [0:leng - 1])
-		ord(s[i]) * 31 ^ (leng - 1 - i)
+		for(i = len(s) - 1; i > -1; i = i - 1)
+		ord(s[i]) * 31 ^ i
 	]);
\ No newline at end of file