PHP7 NullObject

Behavioral/NullObject/PrintLogger.php

@@ -2,15 +2,9 @@
 
 namespace DesignPatterns\Behavioral\NullObject;
 
-/**
- * PrintLogger is a logger that prints the log entry to standard output.
- */
 class PrintLogger implements LoggerInterface
 {
-    /**
-     * @param string $str
-     */
-    public function log($str)
+    public function log(string $str)
     {
         echo $str;
     }