From b30f4cbf11778d22a78d50754b80d68649bae5fb Mon Sep 17 00:00:00 2001
From: Arkadiusz Kondas <arkadiusz.kondas@gmail.com>
Date: Thu, 21 Apr 2016 22:12:45 +0200
Subject: [PATCH] make scalar function static

---
 src/Phpml/Math/Product.php       | 2 +-
 tests/Phpml/Math/ProductTest.php | 8 +++-----
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/Phpml/Math/Product.php b/src/Phpml/Math/Product.php
index 992eeaa..3772207 100644
--- a/src/Phpml/Math/Product.php
+++ b/src/Phpml/Math/Product.php
@@ -12,7 +12,7 @@ class Product
      *
      * @return mixed
      */
-    public function scalar(array $a, array $b)
+    public static function scalar(array $a, array $b)
     {
         $product = 0;
         foreach ($a as $index => $value) {
diff --git a/tests/Phpml/Math/ProductTest.php b/tests/Phpml/Math/ProductTest.php
index d7aa015..ade9942 100644
--- a/tests/Phpml/Math/ProductTest.php
+++ b/tests/Phpml/Math/ProductTest.php
@@ -10,11 +10,9 @@ class ProductTest extends \PHPUnit_Framework_TestCase
 
     public function testScalarProduct()
     {
-        $product = new Product();
-
-        $this->assertEquals(10, $product->scalar([2, 3], [-1, 4]));
-        $this->assertEquals(-0.1, $product->scalar([1, 4, 1], [-2, 0.5, -0.1]));
-        $this->assertEquals(8, $product->scalar([2], [4]));
+        $this->assertEquals(10, Product::scalar([2, 3], [-1, 4]));
+        $this->assertEquals(-0.1, Product::scalar([1, 4, 1], [-2, 0.5, -0.1]));
+        $this->assertEquals(8, Product::scalar([2], [4]));
     }
 
 }
\ No newline at end of file