add new examples

meson.build

@@ -1,7 +1,7 @@
 project(
   'hack', 
   'cpp', 
-  version: '1.0.0',
+  version: '1.1.0',
   default_options : [
     'warning_level=1',
     'optimization=3',
@@ -21,6 +21,7 @@ add_project_arguments (
   '-Wno-narrowing',
   '-Wno-deprecated-enum-enum-conversion',
   '-Wno-volatile',
+  '-Wno-modernize-concat-nested-namespaces',
   language: 'cpp'
 )