From 0bf98e614f8ce41994280fabf07738c5c22404bf Mon Sep 17 00:00:00 2001
From: Kim Alvefur <zash@zash.se>
Date: Thu, 16 Mar 2017 19:09:57 +0100
Subject: util.array: Add O(n) equality check metamethod

---
 util/array.lua | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'util/array.lua')

diff --git a/util/array.lua b/util/array.lua
index ea520f6b..05fa97ca 100644
--- a/util/array.lua
+++ b/util/array.lua
@@ -33,6 +33,19 @@ function array_mt.__add(a1, a2)
 	return res:append(a1):append(a2);
 end
 
+function array_mt.__eq(a, b)
+	if #a == #b then
+		for i = 1, #a do
+			if a[i] ~= b[i] then
+				return false;
+			end
+		end
+	else
+		return false;
+	end
+	return true;
+end
+
 setmetatable(array, { __call = new_array });
 
 -- Read-only methods
-- 
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