added utils folder; added several suplamentary modules

1 files changed, 20 insertions, 7 deletions

diff --git a/benchmark/find.js b/benchmark/find.js
index cc95a44..2d18657 100644
--- a/benchmark/find.js
+++ b/benchmark/find.js
@@ -1,5 +1,11 @@
+/**
+ * benchmark: find a product in product list
+ * using: for vs forEach vs find
+ */
+
+const microtime = require('microtime');
+
 const products = require('../data/products.json');
-var microtime = require('microtime');
 
 
 var selected = [];
@@ -12,25 +18,32 @@ products.forEach( pr => {
 
 function compare() {
 
+    let n = 4;
+
     var f0 = microtime.nowDouble();
-    for(i=0 ; i < 4 ; i++) byFor();
+    for(i=0 ; i < n ; i++) byFor();
     var f1 = microtime.nowDouble();
     // 
     var e0 = microtime.nowDouble();
-    for(i=0 ; i < 4 ; i++) byEach();
+    for(i=0 ; i < n ; i++) byEach();
     var e1 = microtime.nowDouble();
     //
     var b0 = microtime.nowDouble();
-    for(i=0 ; i < 4 ; i++) byFind();
+    for(i=0 ; i < n ; i++) byFind();
     var b1 = microtime.nowDouble();
 
     return {
+        n: n,
+        
         for: f1-f0,
-        ifor: byFor(),
+        items_for: byFor(),
+
         each: e1-e0,
-        ieach: byEach(),
+        items_each: byEach(),
+
         find: b1-b0,
-        ifind: byFind(),
+        items_find: byFind(),
+
         sel: selected,
     }
 }