Replace header guards with #pragma once

Signed-off-by: Leon Marz <main@lmarz.org>

libraries/lib-strings/Identifier.h

@@ -8,8 +8,7 @@
  
  **********************************************************************/
 
-#ifndef __AUDACITY_IDENTIFIER__
-#define __AUDACITY_IDENTIFIER__
+#pragma once
 
 #include <vector>
 #include <wx/string.h>
@@ -234,6 +233,3 @@ using CommandIDs = std::vector<CommandID>;
 
 struct ManualPageIDTag;
 using ManualPageID = TaggedIdentifier< ManualPageIDTag >;
-
-#endif
-

libraries/lib-strings/Internat.h

@@ -9,8 +9,7 @@
 
 **********************************************************************/
 
-#ifndef __AUDACITY_INTERNAT__
-#define __AUDACITY_INTERNAT__
+#pragma once
 
 #include <vector>
 #include <wx/longlong.h>
@@ -163,5 +162,3 @@ private:
 // If not, then the program builds and runs, but strings in the catalog with
 // contexts will fail to translate
 #define HAS_I18N_CONTEXTS wxCHECK_VERSION(3, 1, 1)
-
-#endif

libraries/lib-strings/Languages.h

@@ -8,8 +8,7 @@
 
 **********************************************************************/
 
-#ifndef __AUDACITY_LANGUAGES__
-#define __AUDACITY_LANGUAGES__
+#pragma once
 
 class wxArrayString;
 class wxString;
@@ -56,5 +55,3 @@ STRINGS_API
 wxString GetLocaleName();
 
 }
-
-#endif // __AUDACITY_LANGUAGES__

libraries/lib-strings/TranslatableString.h

@@ -8,8 +8,7 @@
  
  **********************************************************************/
 
-#ifndef __AUDACITY_TRANSLATABLE_STRING__
-#define __AUDACITY_TRANSLATABLE_STRING__
+#pragma once
 
 #include <stddef.h> // for size_t
 #include <functional>
@@ -320,5 +319,3 @@ inline Sink &operator <<( Sink &sink, const TranslatableString &str )
    review the uses of this function, separately from the uses of the type. */
 inline TranslatableString Verbatim( wxString str )
 { return TranslatableString( std::move( str ) ); }
-
-#endif

libraries/lib-strings/wxArrayStringEx.h

@@ -8,8 +8,7 @@
  
  **********************************************************************/
 
-#ifndef __AUDACITY_WX_ARRAY_STRING_EX__
-#define __AUDACITY_WX_ARRAY_STRING_EX__
+#pragma once
 
 #include <wx/arrstr.h>
 
@@ -69,5 +68,3 @@ public:
       return result;
    }
 };
-
-#endif

libraries/lib-utility/MemoryX.h

@@ -1,5 +1,4 @@
-#ifndef __AUDACITY_MEMORY_X_H__
-#define __AUDACITY_MEMORY_X_H__
+#pragma once
 
 // C++ standard header <memory> with a few extensions
 #include <iterator>
@@ -634,5 +633,3 @@ template< typename T > struct NonInterfering
 #define LINEAR_TO_DB(x) (20.0 * log10(x))
 
 #define MAX_AUDIO (1. - 1./(1<<15))
-
-#endif // __AUDACITY_MEMORY_X_H__

libraries/lib-utility/ModuleConstants.h

@@ -8,8 +8,7 @@
 
 **********************************************************************/
 
-#ifndef __AUDACITY_MODULE_CONSTANTS__
-#define __AUDACITY_MODULE_CONSTANTS__
+#pragma once
 
 #define ModuleDispatchName "ModuleDispatch"
 
@@ -52,5 +51,3 @@ extern "C" {                                                           \
 #define DEFINE_MODULE_ENTRIES                                          \
 DEFINE_VERSION_CHECK                                                   \
 extern "C" DLL_API int ModuleDispatch(ModuleDispatchTypes type){ return 1; }
-
-#endif