Use = default and = delete where possible in classes

5 files changed, 6 insertions, 21 deletions

diff --git a/examples/pdf-count-strings.cc b/examples/pdf-count-strings.cc
index a52b7a37..23f4b6cb 100644
--- a/examples/pdf-count-strings.cc
+++ b/examples/pdf-count-strings.cc
@@ -32,9 +32,7 @@ class StringCounter: public QPDFObjectHandle::TokenFilter
         count(0)
     {
     }
-    virtual ~StringCounter()
-    {
-    }
+    virtual ~StringCounter() = default;
     virtual void handleToken(QPDFTokenizer::Token const&);
     virtual void handleEOF();
     int getCount() const;
diff --git a/examples/pdf-create.cc b/examples/pdf-create.cc
index a7b7557e..b5adb01a 100644
--- a/examples/pdf-create.cc
+++ b/examples/pdf-create.cc
@@ -28,7 +28,7 @@ class ImageProvider: public QPDFObjectHandle::StreamDataProvider
 {
   public:
     ImageProvider(std::string const& color_space, std::string const& filter);
-    virtual ~ImageProvider();
+    virtual ~ImageProvider() = default;
     virtual void
     provideStreamData(int objid, int generation, Pipeline* pipeline);
     size_t getWidth() const;
@@ -80,10 +80,6 @@ ImageProvider::ImageProvider(
     }
 }
 
-ImageProvider::~ImageProvider()
-{
-}
-
 size_t
 ImageProvider::getWidth() const
 {
diff --git a/examples/pdf-filter-tokens.cc b/examples/pdf-filter-tokens.cc
index eee90c33..59c85271 100644
--- a/examples/pdf-filter-tokens.cc
+++ b/examples/pdf-filter-tokens.cc
@@ -35,9 +35,7 @@ usage()
 class StringReverser: public QPDFObjectHandle::TokenFilter
 {
   public:
-    virtual ~StringReverser()
-    {
-    }
+    virtual ~StringReverser() = default;
     virtual void handleToken(QPDFTokenizer::Token const&);
 };
 
@@ -70,9 +68,7 @@ StringReverser::handleToken(QPDFTokenizer::Token const& token)
 class ColorToGray: public QPDFObjectHandle::TokenFilter
 {
   public:
-    virtual ~ColorToGray()
-    {
-    }
+    virtual ~ColorToGray() = default;
     virtual void handleToken(QPDFTokenizer::Token const&);
     virtual void handleEOF();
 
diff --git a/examples/pdf-invert-images.cc b/examples/pdf-invert-images.cc
index 033e3622..2ce8f988 100644
--- a/examples/pdf-invert-images.cc
+++ b/examples/pdf-invert-images.cc
@@ -33,9 +33,7 @@ usage()
 class ImageInverter: public QPDFObjectHandle::StreamDataProvider
 {
   public:
-    virtual ~ImageInverter()
-    {
-    }
+    virtual ~ImageInverter() = default;
     virtual void
     provideStreamData(int objid, int generation, Pipeline* pipeline) override;
 
diff --git a/examples/pdf-parse-content.cc b/examples/pdf-parse-content.cc
index f1f7ab55..6bc94da2 100644
--- a/examples/pdf-parse-content.cc
+++ b/examples/pdf-parse-content.cc
@@ -23,10 +23,7 @@ usage()
 class ParserCallbacks: public QPDFObjectHandle::ParserCallbacks
 {
   public:
-    virtual ~ParserCallbacks()
-    {
-    }
-
+    virtual ~ParserCallbacks() = default;
     virtual void contentSize(size_t);
     virtual void handleObject(QPDFObjectHandle, size_t offset, size_t length);
     virtual void handleEOF();