From 670440f55200671337cdfc69b64d7f06b3d226ff Mon Sep 17 00:00:00 2001
From: Stefan Fehrenbach <stefan.fehrenbach@gmail.com>
Date: Fri, 17 Nov 2017 22:20:24 +0000
Subject: [PATCH] Reuse the array returned by match

Instead of basically making a copy and letting the original go out of scope immediately after.

This makes a surprisingly large performance difference in Chrome, not so much in Firefox.
---
 src/Data/String/Regex.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/Data/String/Regex.js b/src/Data/String/Regex.js
index 1d7e407..2e3ac3b 100644
--- a/src/Data/String/Regex.js
+++ b/src/Data/String/Regex.js
@@ -49,11 +49,10 @@ exports._match = function (just) {
         if (m == null) {
           return nothing;
         } else {
-          var list = [];
           for (var i = 0; i < m.length; i++) {
-            list.push(m[i] == null ? nothing : just(m[i]));
+            m[i] = m[i] == null ? nothing : just(m[i]);
           }
-          return just(list);
+          return just(m);
         }
       };
     };