removed a bunch of unneeded isset calls

src/Silex/Provider/HttpCacheServiceProvider.php

@@ -32,7 +32,7 @@ class HttpCacheServiceProvider implements ServiceProviderInterface, EventListene
         $app['http_cache'] = function ($app) {
             $app['http_cache.options'] = array_replace(
                 array(
-                    'debug' => isset($app['debug']) ? $app['debug'] : false,
+                    'debug' => $app['debug'],
                 ), $app['http_cache.options']
             );
 

src/Silex/Provider/HttpFragmentServiceProvider.php

@@ -32,7 +32,7 @@ class HttpFragmentServiceProvider implements ServiceProviderInterface, EventList
     public function register(Container $app)
     {
         $app['fragment.handler'] = function ($app) {
-            return new FragmentHandler($app['fragment.renderers'], isset($app['debug']) ? $app['debug'] : false, $app['request_stack']);
+            return new FragmentHandler($app['fragment.renderers'], $app['debug'], $app['request_stack']);
         };
 
         $app['fragment.renderer.inline'] = function ($app) {
@@ -43,7 +43,7 @@ class HttpFragmentServiceProvider implements ServiceProviderInterface, EventList
         };
 
         $app['fragment.renderer.hinclude'] = function ($app) {
-            $renderer = new HIncludeFragmentRenderer(null, $app['uri_signer'], $app['fragment.renderer.hinclude.global_template'], isset($app['charset']) ? $app['charset'] : 'UTF-8');
+            $renderer = new HIncludeFragmentRenderer(null, $app['uri_signer'], $app['fragment.renderer.hinclude.global_template'], $app['charset']);
             $renderer->setFragmentPath($app['fragment.path']);
 
             return $renderer;

src/Silex/Provider/MonologServiceProvider.php

@@ -49,7 +49,7 @@ class MonologServiceProvider implements ServiceProviderInterface, BootableProvid
 
             $log->pushHandler($app['monolog.handler']);
 
-            if (isset($app['debug']) && $app['debug'] && isset($app['monolog.handler.debug'])) {
+            if ($app['debug'] && isset($app['monolog.handler.debug'])) {
                 $log->pushHandler($app['monolog.handler.debug']);
             }
 

src/Silex/Provider/TwigServiceProvider.php

@@ -52,16 +52,16 @@ class TwigServiceProvider implements ServiceProviderInterface
         $app['twig'] = function ($app) {
             $app['twig.options'] = array_replace(
                 array(
-                    'charset' => isset($app['charset']) ? $app['charset'] : 'UTF-8',
-                    'debug' => isset($app['debug']) ? $app['debug'] : false,
-                    'strict_variables' => isset($app['debug']) ? $app['debug'] : false,
+                    'charset' => $app['charset'],
+                    'debug' => $app['debug'],
+                    'strict_variables' => $app['debug'],
                 ), $app['twig.options']
             );
 
             $twig = $app['twig.environment_factory']($app);
             $twig->addGlobal('app', $app['twig.app_variable']);
 
-            if (isset($app['debug']) && $app['debug']) {
+            if ($app['debug']) {
                 $twig->addExtension(new \Twig_Extension_Debug());
             }