$container->inject now returns the value the function produces.

src/IoC/Container.php

@@ -114,16 +114,18 @@ public function resolve($classOrInterfaceName)
     /**
      * Inject properties into an object or invoke a function with parameters injected.
      *
-     * @param $object object|callable The object or function to have its properties injected
+     * @param $object object|callable The object or function to have its properties/arguments injected
+     * @return object Returns the object, or the result of the function
      * @throws Exceptions\InjectorException
      */
     public function inject($object) {
 
         if (is_callable($object)) {
-            $this->functionInjector->run($object);
+            return $this->functionInjector->run($object);
         }
         else {
             $this->propertyInjector->inject($object);
+            return $object;
         }
     }
 

src/Tests/IoC/IoContainerTest.php

@@ -300,10 +300,12 @@ public function testInjectForMethod() {
         $container->register('\DC\Tests\IoC\Foo')->to('\DC\Tests\IoC\IFoo');
 
         $ran = false;
-        $container->inject(function(IFoo $foo) use (&$ran) {
+        $result = $container->inject(function(IFoo $foo) use (&$ran) {
             $this->assertInstanceOf('\DC\Tests\IoC\Foo', $foo);
             $ran = true;
+            return true;
         });
         $this->assertTrue($ran);
+        $this->assertTrue($result);
     }
 }