change hhvm to 3.12

diycp · Jul 7, 2016 · adc2d1c · adc2d1c
1 parent f3288c5
commit adc2d1c
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git 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
@@ -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;