More types.

src/Numerics/BasicMath.php

@@ -24,7 +24,7 @@ class BasicMath
     /**
      * Sums the items in $itemsToSum
      *
-     * @param  array    $itemsToSum The items to sum,
+     * @param  mixed[]    $itemsToSum The items to sum,
      * @param  \Closure $callback   The function to apply to each array element before summing.
      * @return number The sum.
      */

src/Numerics/Vector.php

@@ -4,6 +4,9 @@ namespace DNW\Skills\Numerics;
 
 class Vector extends Matrix
 {
+    /**
+     * @param float[] $vectorValues
+     */
     public function __construct(array $vectorValues)
     {
         $columnValues = [];