From adc2d1c81b67a630508ae57a7f7a59304c11fbb4 Mon Sep 17 00:00:00 2001
From: Arkadiusz Kondas <arkadiusz.kondas@gmail.com>
Date: Thu, 7 Jul 2016 23:38:11 +0200
Subject: [PATCH] change hhvm to 3.12

---
 .travis.yml                                    | 2 +-
 src/Phpml/Classification/KNearestNeighbors.php | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 96ac55f..0219f4b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,7 +8,7 @@ matrix:
       php: '7.0'
 
     - os: linux
-      php: hhvm
+      php: hhvm-3.12
       env:
         - HHVMPHP7="yes"
 
diff --git a/src/Phpml/Classification/KNearestNeighbors.php b/src/Phpml/Classification/KNearestNeighbors.php
index 42d8374..594438b 100644
--- a/src/Phpml/Classification/KNearestNeighbors.php
+++ b/src/Phpml/Classification/KNearestNeighbors.php
@@ -27,13 +27,13 @@ class KNearestNeighbors implements Classifier
      * @param int           $k
      * @param Distance|null $distanceMetric (if null then Euclidean distance as default)
      */
-    public function __construct(int $k = null, Distance $distanceMetric = null)
+    public function __construct(int $k = 3, Distance $distanceMetric = null)
     {
         if (null === $distanceMetric) {
             $distanceMetric = new Euclidean();
         }
 
-        $this->k = $k ?? 3;
+        $this->k = $k;
         $this->samples = [];
         $this->targets = [];
         $this->distanceMetric = $distanceMetric;