Changed const to let in es6 Array.map example

Both the counter and the result array were constants, which caused a syntax error
survivejs · Feb 25, 2018 · 8188e72 · 8188e72
1 parent a44c260
commit 8188e72
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/manuscript/appendices/01_language_features.md b/manuscript/appendices/01_language_features.md
@@ -275,8 +275,8 @@ In ES6 we could write it as follows:
 
 ```javascript
 function map(cb, values) {
-  const ret = [];
-  const i, len;
+  let ret = [];
+  let i, len;
 
   for(i = 0, len = values.length; i < len; i++) {
     ret.push(cb(values[i]));