Replace include guards with "#pragma once" in all header files and in the database model generator scripts. (#506)

connector_api/bind_result.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_DATABASE_BIND_RESULT_H
-#define SQLPP_DATABASE_BIND_RESULT_H
-
 #include <memory>
 
 namespace sqlpp
@@ -88,4 +87,3 @@ namespace sqlpp
     };
   }
 }
-#endif

connector_api/connection.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * Copyright (c) 2023, Vesselin Atanasov
@@ -25,9 +27,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_DATABASE_CONNECTION_H
-#define SQLPP_DATABASE_CONNECTION_H
-
 #include <string>
 #include <sqlpp11/connection.h>
 #include <sqlpp11/transaction.h>
@@ -223,5 +222,3 @@ namespace sqlpp
 }  // namespace sqlpp
 
 #include <sqlpp11/database/interpreter.h>
-
-#endif

connector_api/interpreter.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_DATABASE_INTERPRETER_H
-#define SQLPP_DATABASE_INTERPRETER_H
-
 #include <sqlpp11/vendor/concat.h>
 #include <sqlpp11/vendor/insert_list.h>
 
@@ -57,5 +56,3 @@ namespace sqlpp
     };
   }
 }
-
-#endif

connector_api/prepared_statement.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_DATABASE_PREPARED_STATEMENT_H
-#define SQLPP_DATABASE_PREPARED_STATEMENT_H
-
 #include <memory>
 #include <string>
 
@@ -56,4 +55,3 @@ namespace sqlpp
     };
   }
 }
-#endif

include/sqlpp11/aggregate_function_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2020, Roland Bock, MacDue
  * All rights reserved.
@@ -23,8 +25,6 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-#ifndef SQLPP11_AGGREGATE_FUNCTION_OPERATORS_H
-#define SQLPP11_AGGREGATE_FUNCTION_OPERATORS_H
 
 namespace sqlpp
 {
@@ -37,6 +37,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-
-#endif
-

include/sqlpp11/aggregate_functions.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,13 +26,8 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_AGGREGATE_FUNCTIONS_H
-#define SQLPP11_AGGREGATE_FUNCTIONS_H
-
 #include <sqlpp11/aggregate_functions/count.h>
 #include <sqlpp11/aggregate_functions/min.h>
 #include <sqlpp11/aggregate_functions/max.h>
 #include <sqlpp11/aggregate_functions/avg.h>
 #include <sqlpp11/aggregate_functions/sum.h>
-
-#endif

include/sqlpp11/aggregate_functions/avg.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2020, Roland Bock, MacDue
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_AGGREGATE_FUNCTIONS_AVG_H
-#define SQLPP11_AGGREGATE_FUNCTIONS_AVG_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/char_sequence.h>
 
@@ -115,5 +114,3 @@ namespace sqlpp
     return {t};
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/aggregate_functions/count.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2020, Roland Bock, MacDue
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_AGGREGATE_FUNCTIONS_COUNT_H
-#define SQLPP11_AGGREGATE_FUNCTIONS_COUNT_H
-
 #include <sqlpp11/over.h>
 #include <sqlpp11/char_sequence.h>
 #include <sqlpp11/select_flags.h>
@@ -118,5 +117,3 @@ namespace sqlpp
     return {t};
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/aggregate_functions/max.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2020, Roland Bock, MacDue
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_AGGREGATE_FUNCTIONS_MAX_H
-#define SQLPP11_AGGREGATE_FUNCTIONS_MAX_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/char_sequence.h>
 
@@ -111,5 +110,3 @@ namespace sqlpp
     return {t};
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/aggregate_functions/min.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2020, Roland Bock, MacDue
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_AGGREGATE_FUNCTIONS_MIN_H
-#define SQLPP11_AGGREGATE_FUNCTIONS_MIN_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/char_sequence.h>
 
@@ -111,5 +110,3 @@ namespace sqlpp
     return {t};
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/aggregate_functions/sum.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2020, Roland Bock, MacDue
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_AGGREGATE_FUNCTIONS_SUM_H
-#define SQLPP11_AGGREGATE_FUNCTIONS_SUM_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/char_sequence.h>
 
@@ -115,5 +114,3 @@ namespace sqlpp
     return {t};
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/alias.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_ALIAS_H
-#define SQLPP11_ALIAS_H
-
 #include <sqlpp11/type_traits.h>
 
 namespace sqlpp
@@ -64,5 +63,3 @@ namespace sqlpp
     return context;
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/alias_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_ALIAS_OPERATORS_H
-#define SQLPP11_ALIAS_OPERATORS_H
-
 #include <sqlpp11/alias.h>
 
 namespace sqlpp
@@ -41,4 +40,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/alias_provider.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2016, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_ALIAS_PROVIDER_H
-#define SQLPP11_ALIAS_PROVIDER_H
-
 #include <type_traits>
 #include <sqlpp11/char_sequence.h>
 
@@ -126,5 +125,3 @@ namespace sqlpp
     SQLPP_ALIAS_PROVIDER(right)
   }  // namespace alias
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/all_of.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2021, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_ALL_OF_H
-#define SQLPP11_ALL_OF_H
-
 namespace sqlpp
 {
   template <typename Table>
@@ -35,5 +34,3 @@ namespace sqlpp
     return {};
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/any.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_ANY_H
-#define SQLPP11_ANY_H
-
 #include <sqlpp11/data_types/boolean.h>
 #include <sqlpp11/char_sequence.h>
 #include <sqlpp11/detail/type_set.h>
@@ -70,5 +69,3 @@ namespace sqlpp
     return {t};
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/assignment.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_ASSIGNMENT_H
-#define SQLPP11_ASSIGNMENT_H
-
 #include <sqlpp11/default_value.h>
 #include <sqlpp11/null.h>
 #include <sqlpp11/serialize.h>
@@ -69,5 +68,3 @@ namespace sqlpp
     return context;
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/auto_alias.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_AUTO_ALIAS_H
-#define SQLPP11_AUTO_ALIAS_H
-
 #include <sqlpp11/alias.h>
 
 namespace sqlpp
@@ -61,5 +60,3 @@ namespace sqlpp
   template <typename T>
   using auto_alias_t = typename detail::auto_alias_impl<T>::type;
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/bad_expression.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_BAD_EXPRESSION_H
-#define SQLPP11_BAD_EXPRESSION_H
-
 #include <sqlpp11/portable_static_assert.h>
 #include <sqlpp11/type_traits.h>
 
@@ -48,5 +47,3 @@ namespace sqlpp
   template <typename Context, typename ValueType>
   Context serialize(const bad_expression<ValueType>& t, Context& context);
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/basic_expression_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2016, Roland Bock
  * Copyright (c) 2016, Aaron Bishop
@@ -25,9 +27,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_BASIC_EXPRESSION_OPERATORS_H
-#define SQLPP11_BASIC_EXPRESSION_OPERATORS_H
-
 #include <sqlpp11/value_type_fwd.h>
 #include <sqlpp11/bad_expression.h>
 #include <sqlpp11/portable_static_assert.h>
@@ -315,5 +314,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/boolean_expression.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_BOOLEAN_EXPRESSION_H
-#define SQLPP11_BOOLEAN_EXPRESSION_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/interpretable.h>
 
@@ -73,5 +72,3 @@ namespace sqlpp
     return serialize(t._expr, context);
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/case.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_CASE_H
-#define SQLPP11_CASE_H
-
 #include <sqlpp11/char_sequence.h>
 #include <sqlpp11/data_types/boolean.h>
 #include <sqlpp11/detail/type_set.h>
@@ -181,5 +180,3 @@ namespace sqlpp
     return detail::case_when_impl(check_case_when_t<When>{}, when);
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/char_sequence.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_CHAR_SEQUENCE_H
-#define SQLPP11_CHAR_SEQUENCE_H
-
 #include <type_traits>
 #include <sqlpp11/detail/index_sequence.h>
 
@@ -75,5 +74,3 @@ namespace sqlpp
       typename make_char_sequence_impl<N, Input, sqlpp::detail::make_index_sequence<N - 1>>::type;
 
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/chrono.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2016, Roland Bock, Aaron Bishop
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_CHRONO_H
-#define SQLPP11_CHRONO_H
-
 #include <date/date.h>
 
 namespace sqlpp
@@ -53,5 +52,3 @@ namespace sqlpp
     }
   }  // namespace chrono
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/column.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_COLUMN_H
-#define SQLPP11_COLUMN_H
-
 #include <sqlpp11/alias.h>
 #include <sqlpp11/column_fwd.h>
 #include <sqlpp11/default_value.h>
@@ -118,5 +117,3 @@ namespace sqlpp
     return context;
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/column_fwd.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,13 +26,8 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_COLUMN_FWD_H
-#define SQLPP11_COLUMN_FWD_H
-
 namespace sqlpp
 {
   template <typename Table, typename ColumnSpec>
   struct column_t;
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/column_types.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,4 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_COLUMN_TYPES_H
-#define SQLPP_COLUMN_TYPES_H
-
 #include <sqlpp11/data_types.h>
-
-#endif

include/sqlpp11/connection.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * Copyright (c) 2023, Vesselin Atanasov
@@ -25,9 +27,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_CONNECTION_H
-#define SQLPP11_CONNECTION_H
-
 #include <functional>
 #include <memory>
 
@@ -156,5 +155,3 @@ namespace sqlpp
     }
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/consistent.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_CONSISTENT_H
-#define SQLPP11_CONSISTENT_H
-
 #include <type_traits>
 
 namespace sqlpp
@@ -39,5 +38,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/cte.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2016, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_CTE_H
-#define SQLPP11_CTE_H
-
 #include <sqlpp11/expression.h>
 #include <sqlpp11/interpret_tuple.h>
 #include <sqlpp11/interpretable_list.h>
@@ -274,5 +273,3 @@ namespace sqlpp
     return {};
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/custom_query.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_CUSTOM_QUERY_H
-#define SQLPP11_CUSTOM_QUERY_H
-
 #include <sqlpp11/connection.h>
 #include <sqlpp11/detail/get_first.h>
 #include <sqlpp11/hidden.h>
@@ -146,4 +145,3 @@ namespace sqlpp
     return custom_query_t<Database, wrap_operand_t<Parts>...>(parts...);
   }
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2017, Roland Bock, Aaron Bishop
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_H
-#define SQLPP11_DATA_TYPES_H
-
 #include <sqlpp11/data_types/blob.h>
 #include <sqlpp11/data_types/boolean.h>
 #include <sqlpp11/data_types/integral.h>
@@ -37,5 +36,3 @@
 #include <sqlpp11/data_types/time_of_day.h>
 #include <sqlpp11/data_types/time_point.h>
 #include <sqlpp11/data_types/no_value.h>
-
-#endif

include/sqlpp11/data_types/blob.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2017, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_BLOB_H
-#define SQLPP_BLOB_H
-
 #include <sqlpp11/data_types/blob/data_type.h>
 #include <sqlpp11/data_types/blob/operand.h>
 #include <sqlpp11/data_types/blob/wrap_operand.h>
@@ -38,5 +37,3 @@
 // blob specific functions
 #include <sqlpp11/data_types/text/like.h>
 #include <sqlpp11/data_types/text/concat.h>
-
-#endif

include/sqlpp11/data_types/blob/column_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2017, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_BLOB_COLUMN_OPERATORS_H
-#define SQLPP_BLOB_COLUMN_OPERATORS_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/assignment.h>
 #include <sqlpp11/data_types/blob/data_type.h>
@@ -54,4 +53,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/blob/data_type.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2017, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_BLOB_DATA_TYPE_H
-#define SQLPP_BLOB_DATA_TYPE_H
-
 #include <vector>
 #include <cstdint>
 
@@ -47,4 +46,3 @@ namespace sqlpp
   using blob = blob;
   using mediumblob = blob;
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/blob/expression_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2017, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_BLOB_EXPRESSION_OPERATORS_H
-#define SQLPP_BLOB_EXPRESSION_OPERATORS_H
-
 #include <sqlpp11/operand_check.h>
 #include <sqlpp11/expression_operators.h>
 #include <sqlpp11/basic_expression_operators.h>
@@ -67,4 +66,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/blob/operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2017, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_BLOB_OPERAND_H
-#define SQLPP_BLOB_OPERAND_H
-
 #include <vector>
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/alias_operators.h>
@@ -79,4 +78,3 @@ namespace sqlpp
     return context;
   }
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/blob/parameter_value.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2017, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_BLOB_PARAMETER_VALUE_H
-#define SQLPP_BLOB_PARAMETER_VALUE_H
-
 #include <sqlpp11/data_types/parameter_value.h>
 #include <sqlpp11/data_types/parameter_value_base.h>
 #include <sqlpp11/data_types/blob/data_type.h>
@@ -49,4 +48,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/blob/result_field.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2017, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_BLOB_RESULT_FIELD_H
-#define SQLPP_BLOB_RESULT_FIELD_H
-
 #include <sqlpp11/basic_expression_operators.h>
 #include <sqlpp11/result_field.h>
 #include <sqlpp11/result_field_base.h>
@@ -83,4 +82,3 @@ namespace sqlpp
     }
   }
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/blob/wrap_operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2017, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_BLOB_WRAP_OPERAND_H
-#define SQLPP_BLOB_WRAP_OPERAND_H
-
 #include <utility>
 #include <vector>
 #include <sqlpp11/type_traits.h>
@@ -48,4 +47,3 @@ namespace sqlpp
     using type = blob_operand;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/boolean.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_BOOLEAN_H
-#define SQLPP11_DATA_TYPES_BOOLEAN_H
-
 #include <sqlpp11/data_types/boolean/data_type.h>
 #include <sqlpp11/data_types/boolean/operand.h>
 #include <sqlpp11/data_types/boolean/wrap_operand.h>
@@ -34,5 +33,3 @@
 #include <sqlpp11/data_types/boolean/column_operators.h>
 #include <sqlpp11/data_types/boolean/parameter_value.h>
 #include <sqlpp11/data_types/boolean/result_field.h>
-
-#endif

include/sqlpp11/data_types/boolean/column_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_BOOLEAN_COLUMN_OPERATORS_H
-#define SQLPP11_DATA_TYPES_BOOLEAN_COLUMN_OPERATORS_H
-
 #include <sqlpp11/data_types/column_operators.h>
 
 namespace sqlpp
@@ -38,4 +37,3 @@ namespace sqlpp
   {
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/boolean/data_type.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_BOOLEAN_DATA_TYPE_H
-#define SQLPP11_DATA_TYPES_BOOLEAN_DATA_TYPE_H
-
 #include <sqlpp11/type_traits.h>
 
 namespace sqlpp
@@ -42,5 +41,3 @@ namespace sqlpp
 
   using bit = sqlpp::boolean;
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/boolean/expression_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_BOOLEAN_EXPRESSION_OPERATORS_H
-#define SQLPP11_DATA_TYPES_BOOLEAN_EXPRESSION_OPERATORS_H
-
 #include <sqlpp11/expression_return_types.h>
 #include <sqlpp11/operand_check.h>
 #include <sqlpp11/expression_operators.h>
@@ -60,5 +59,3 @@ namespace sqlpp
     using type = logical_not_t<wrap_operand_t<T>>;
   };
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/boolean/operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_BOOLEAN_OPERAND_H
-#define SQLPP11_DATA_TYPES_BOOLEAN_OPERAND_H
-
 #include <ciso646>  // Required for some compilers to use aliases for boolean operators
 
 #include <sqlpp11/type_traits.h>
@@ -68,5 +67,3 @@ namespace sqlpp
     return context;
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/boolean/parameter_value.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_BOOLEAN_PARAMETER_VALUE_H
-#define SQLPP11_DATA_TYPES_BOOLEAN_PARAMETER_VALUE_H
-
 #include <sqlpp11/data_types/parameter_value.h>
 #include <sqlpp11/data_types/parameter_value_base.h>
 #include <sqlpp11/data_types/boolean/data_type.h>
@@ -47,5 +46,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/boolean/result_field.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_BOOLEAN_RESULT_FIELD_H
-#define SQLPP11_DATA_TYPES_BOOLEAN_RESULT_FIELD_H
-
 #include <sqlpp11/basic_expression_operators.h>
 #include <sqlpp11/result_field.h>
 #include <sqlpp11/result_field_base.h>
@@ -52,5 +51,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/boolean/wrap_operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_BOOLEAN_WRAP_OPERAND_H
-#define SQLPP11_DATA_TYPES_BOOLEAN_WRAP_OPERAND_H
-
 #include <sqlpp11/wrap_operand.h>
 
 namespace sqlpp
@@ -39,5 +38,3 @@ namespace sqlpp
     using type = boolean_operand;
   };
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/column_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_COLUMN_OPERATORS_H
-#define SQLPP11_DATA_TYPES_COLUMN_OPERATORS_H
-
 #include <sqlpp11/wrong.h>
 
 namespace sqlpp
@@ -37,5 +36,3 @@ namespace sqlpp
     static_assert(wrong_t<column_operators>::value, "Missing column operators for ValueType");
   };
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/day_point.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_DAY_POINT_H
-#define SQLPP11_DATA_TYPES_DAY_POINT_H
-
 #include <sqlpp11/data_types/day_point/data_type.h>
 #include <sqlpp11/data_types/day_point/operand.h>
 #include <sqlpp11/data_types/day_point/wrap_operand.h>
@@ -34,5 +33,3 @@
 #include <sqlpp11/data_types/day_point/column_operators.h>
 #include <sqlpp11/data_types/day_point/parameter_value.h>
 #include <sqlpp11/data_types/day_point/result_field.h>
-
-#endif

include/sqlpp11/data_types/day_point/column_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_DAY_POINT_COLUMN_OPERATORS_H
-#define SQLPP11_DATA_TYPES_DAY_POINT_COLUMN_OPERATORS_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/assignment.h>
 #include <sqlpp11/data_types/day_point/data_type.h>
@@ -41,4 +40,3 @@ namespace sqlpp
     using _is_valid_operand = is_valid_operand<day_point, T>;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/day_point/data_type.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_DAY_POINT_DATA_TYPE_H
-#define SQLPP11_DATA_TYPES_DAY_POINT_DATA_TYPE_H
-
 #include <sqlpp11/chrono.h>
 #include <sqlpp11/type_traits.h>
 
@@ -45,4 +44,3 @@ namespace sqlpp
 
   using date = day_point;
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/day_point/expression_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_DAY_POINT_EXPRESSION_OPERATORS_H
-#define SQLPP11_DATA_TYPES_DAY_POINT_EXPRESSION_OPERATORS_H
-
 #include <sqlpp11/expression_operators.h>
 #include <sqlpp11/basic_expression_operators.h>
 #include <sqlpp11/type_traits.h>
@@ -39,4 +38,3 @@ namespace sqlpp
   {
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/day_point/operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_DAY_POINT_OPERAND_H
-#define SQLPP11_DATA_TYPES_DAY_POINT_OPERAND_H
-
 #include <date/date.h>
 #include <sqlpp11/chrono.h>
 #include <sqlpp11/type_traits.h>
@@ -67,4 +66,3 @@ namespace sqlpp
     return context;
   }
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/day_point/parameter_value.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_DAY_POINT_PARAMETER_VALUE_H
-#define SQLPP11_DATA_TYPES_DAY_POINT_PARAMETER_VALUE_H
-
 #include <sqlpp11/data_types/parameter_value.h>
 #include <sqlpp11/data_types/parameter_value_base.h>
 #include <sqlpp11/data_types/day_point/data_type.h>
@@ -49,4 +48,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/day_point/result_field.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_DAY_POINT_RESULT_FIELD_H
-#define SQLPP11_DATA_TYPES_DAY_POINT_RESULT_FIELD_H
-
 #include <sqlpp11/basic_expression_operators.h>
 #include <sqlpp11/result_field.h>
 #include <sqlpp11/result_field_base.h>
@@ -69,4 +68,3 @@ namespace sqlpp
     return os;
   }
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/day_point/wrap_operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_DAY_POINT_WRAP_OPERAND_H
-#define SQLPP11_DATA_TYPES_DAY_POINT_WRAP_OPERAND_H
-
 #include <utility>
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/chrono.h>
@@ -42,4 +41,3 @@ namespace sqlpp
     using type = day_point_operand;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/floating_point.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_FLOATING_POINT_H
-#define SQLPP11_DATA_TYPES_FLOATING_POINT_H
-
 #include <sqlpp11/data_types/floating_point/data_type.h>
 #include <sqlpp11/data_types/floating_point/operand.h>
 #include <sqlpp11/data_types/floating_point/wrap_operand.h>
@@ -34,5 +33,3 @@
 #include <sqlpp11/data_types/floating_point/column_operators.h>
 #include <sqlpp11/data_types/floating_point/parameter_value.h>
 #include <sqlpp11/data_types/floating_point/result_field.h>
-
-#endif

include/sqlpp11/data_types/floating_point/column_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_FLOATING_POINT_COLUMN_OPERATORS_H
-#define SQLPP11_DATA_TYPES_FLOATING_POINT_COLUMN_OPERATORS_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/assignment.h>
 #include <sqlpp11/data_types/floating_point/data_type.h>
@@ -77,4 +76,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/floating_point/data_type.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_FLOATING_POINT_DATA_TYPE_H
-#define SQLPP11_DATA_TYPES_FLOATING_POINT_DATA_TYPE_H
-
 #include <sqlpp11/type_traits.h>
 
 namespace sqlpp
@@ -40,4 +39,3 @@ namespace sqlpp
     using _is_valid_operand = is_numeric_t<T>;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/floating_point/expression_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_FLOATING_POINT_EXPRESSION_OPERATORS_H
-#define SQLPP11_DATA_TYPES_FLOATING_POINT_EXPRESSION_OPERATORS_H
-
 #include <sqlpp11/expression_return_types.h>
 #include <sqlpp11/operand_check.h>
 #include <sqlpp11/expression_operators.h>
@@ -83,4 +82,3 @@ namespace sqlpp
     using type = unary_minus_t<floating_point, wrap_operand_t<T>>;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/floating_point/operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_FLOATING_POINT_OPERAND_H
-#define SQLPP11_DATA_TYPES_FLOATING_POINT_OPERAND_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/alias_operators.h>
 
@@ -64,4 +63,3 @@ namespace sqlpp
     return context;
   }
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/floating_point/parameter_value.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_FLOATING_POINT_PARAMETER_VALUE_H
-#define SQLPP11_DATA_TYPES_FLOATING_POINT_PARAMETER_VALUE_H
-
 #include <sqlpp11/data_types/parameter_value.h>
 #include <sqlpp11/data_types/parameter_value_base.h>
 #include <sqlpp11/data_types/floating_point/data_type.h>
@@ -49,4 +48,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/floating_point/result_field.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_FLOATING_POINT_RESULT_FIELD_H
-#define SQLPP11_DATA_TYPES_FLOATING_POINT_RESULT_FIELD_H
-
 #include <sqlpp11/exception.h>
 #include <sqlpp11/result_field.h>
 #include <sqlpp11/result_field_base.h>
@@ -53,4 +52,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/floating_point/wrap_operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_FLOATING_POINT_WRAP_OPERAND_H
-#define SQLPP11_DATA_TYPES_FLOATING_POINT_WRAP_OPERAND_H
-
 #include <utility>
 #include <sqlpp11/wrap_operand.h>
 
@@ -40,4 +39,3 @@ namespace sqlpp
     using type = floating_point_operand;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/integral.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_INTEGRAL_H
-#define SQLPP11_DATA_TYPES_INTEGRAL_H
-
 #include <sqlpp11/data_types/integral/data_type.h>
 #include <sqlpp11/data_types/integral/operand.h>
 #include <sqlpp11/data_types/integral/wrap_operand.h>
@@ -34,5 +33,3 @@
 #include <sqlpp11/data_types/integral/column_operators.h>
 #include <sqlpp11/data_types/integral/parameter_value.h>
 #include <sqlpp11/data_types/integral/result_field.h>
-
-#endif

include/sqlpp11/data_types/integral/column_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_INTEGRAL_COLUMN_OPERATORS_H
-#define SQLPP11_DATA_TYPES_INTEGRAL_COLUMN_OPERATORS_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/assignment.h>
 #include <sqlpp11/value_type.h>
@@ -78,5 +77,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/integral/data_type.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_INTEGRAL_DATA_TYPE_H
-#define SQLPP11_DATA_TYPES_INTEGRAL_DATA_TYPE_H
-
 #include <sqlpp11/type_traits.h>
 
 namespace sqlpp
@@ -45,4 +44,3 @@ namespace sqlpp
   using integer = integral;
   using bigint = integral;
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/integral/expression_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2016, Roland Bock, Aaron Bishop
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_INTEGRAL_EXPRESSION_OPERATORS_H
-#define SQLPP11_DATA_TYPES_INTEGRAL_EXPRESSION_OPERATORS_H
-
 #include <sqlpp11/expression_return_types.h>
 #include <sqlpp11/operand_check.h>
 #include <sqlpp11/expression_operators.h>
@@ -147,4 +146,3 @@ namespace sqlpp
     using type = shift_right_t<wrap_operand_t<L>, integral, wrap_operand_t<R>>;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/integral/operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_INTEGRAL_OPERAND_H
-#define SQLPP11_DATA_TYPES_INTEGRAL_OPERAND_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/alias_operators.h>
 
@@ -66,5 +65,3 @@ namespace sqlpp
     return context;
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/integral/parameter_value.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_INTEGRAL_PARAMETER_VALUE_H
-#define SQLPP11_DATA_TYPES_INTEGRAL_PARAMETER_VALUE_H
-
 #include <sqlpp11/data_types/parameter_value.h>
 #include <sqlpp11/data_types/parameter_value_base.h>
 #include <sqlpp11/data_types/integral/data_type.h>
@@ -47,4 +46,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/integral/result_field.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_INTEGRAL_RESULT_FIELD_H
-#define SQLPP11_DATA_TYPES_INTEGRAL_RESULT_FIELD_H
-
 #include <sqlpp11/basic_expression_operators.h>
 #include <sqlpp11/result_field.h>
 #include <sqlpp11/result_field_base.h>
@@ -52,4 +51,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/integral/wrap_operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2016, Roland Bock, Aaron Bishop
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_INTEGRAL_WRAP_OPERAND_H
-#define SQLPP11_DATA_TYPES_INTEGRAL_WRAP_OPERAND_H
-
 #include <utility>
 #include <sqlpp11/wrap_operand.h>
 
@@ -42,4 +41,3 @@ namespace sqlpp
     using type = integral_operand;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/no_value.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_NO_VALUE_H
-#define SQLPP11_DATA_TYPES_NO_VALUE_H
-
 #include <sqlpp11/data_types/no_value/data_type.h>
 #include <sqlpp11/data_types/no_value/operand.h>
 #include <sqlpp11/data_types/no_value/wrap_operand.h>
@@ -34,5 +33,3 @@
 #include <sqlpp11/data_types/no_value/column_operators.h>
 #include <sqlpp11/data_types/no_value/parameter_value.h>
 #include <sqlpp11/data_types/no_value/result_field.h>
-
-#endif

include/sqlpp11/data_types/no_value/column_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_NO_VALUE_COLUMN_OPERATORS_H
-#define SQLPP11_DATA_TYPES_NO_VALUE_COLUMN_OPERATORS_H
-
 #include <sqlpp11/data_types/column_operators.h>
 
 namespace sqlpp
@@ -38,4 +37,3 @@ namespace sqlpp
   {
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/no_value/data_type.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_NO_VALUE_DATA_TYPE_H
-#define SQLPP11_DATA_TYPES_NO_VALUE_DATA_TYPE_H
-
 #include <sqlpp11/type_traits.h>
 
 namespace sqlpp
@@ -40,5 +39,3 @@ namespace sqlpp
     using _is_valid_operand = wrong_t<T>;
   };
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/no_value/expression_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_NO_VALUE_EXPRESSION_OPERATORS_H
-#define SQLPP11_DATA_TYPES_NO_VALUE_EXPRESSION_OPERATORS_H
-
 #include <sqlpp11/expression_return_types.h>
 #include <sqlpp11/expression_operators.h>
 #include <sqlpp11/basic_expression_operators.h>
@@ -38,5 +37,3 @@ namespace sqlpp
   {
   };
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/no_value/operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -23,8 +25,3 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-
-#ifndef SQLPP11_DATA_TYPES_NO_VALUE_OPERAND_H
-#define SQLPP11_DATA_TYPES_NO_VALUE_OPERAND_H
-
-#endif

include/sqlpp11/data_types/no_value/parameter_value.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -23,8 +25,3 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-
-#ifndef SQLPP11_DATA_TYPES_NO_VALUE_PARAMETER_VALUE_H
-#define SQLPP11_DATA_TYPES_NO_VALUE_PARAMETER_VALUE_H
-
-#endif

include/sqlpp11/data_types/no_value/result_field.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_NO_VALUE_RESULT_FIELD_H
-#define SQLPP11_DATA_TYPES_NO_VALUE_RESULT_FIELD_H
-
 #include <sqlpp11/result_field.h>
 #include <sqlpp11/data_types/no_value/data_type.h>
 #include <sqlpp11/field_spec.h>
@@ -69,5 +68,3 @@ namespace sqlpp
     return os;
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/no_value/wrap_operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -23,8 +25,3 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-
-#ifndef SQLPP11_DATA_TYPES_NO_VALUE_WRAP_OPERAND_H
-#define SQLPP11_DATA_TYPES_NO_VALUE_WRAP_OPERAND_H
-
-#endif

include/sqlpp11/data_types/parameter_value.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_PARAMETER_VALUE_H
-#define SQLPP11_DATA_TYPES_PARAMETER_VALUE_H
-
 #include <sqlpp11/wrong.h>
 
 namespace sqlpp
@@ -37,5 +36,3 @@ namespace sqlpp
     static_assert(wrong_t<parameter_value_t>::value, "Missing parameter value type for ValueType");
   };
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/parameter_value_base.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_PARAMETER_VALUE_BASE_H
-#define SQLPP11_DATA_TYPES_PARAMETER_VALUE_BASE_H
-
 #include <sqlpp11/data_types/parameter_value.h>
 #include <sqlpp11/value_or_null.h>
 
@@ -90,4 +89,3 @@ namespace sqlpp
     bool _is_null;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/text.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TEXT_H
-#define SQLPP11_DATA_TYPES_TEXT_H
-
 #include <sqlpp11/data_types/text/data_type.h>
 #include <sqlpp11/data_types/text/operand.h>
 #include <sqlpp11/data_types/text/wrap_operand.h>
@@ -38,5 +37,3 @@
 // text specific functions
 #include <sqlpp11/data_types/text/like.h>
 #include <sqlpp11/data_types/text/concat.h>
-
-#endif

include/sqlpp11/data_types/text/column_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TEXT_COLUMN_OPERATORS_H
-#define SQLPP11_DATA_TYPES_TEXT_COLUMN_OPERATORS_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/assignment.h>
 #include <sqlpp11/data_types/text/data_type.h>
@@ -54,4 +53,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/text/concat.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TEXT_CONCAT_H
-#define SQLPP11_DATA_TYPES_TEXT_CONCAT_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/char_sequence.h>
 #include <sqlpp11/interpret_tuple.h>
@@ -93,5 +92,3 @@ namespace sqlpp
     return {args...};
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/text/data_type.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TEXT_DATA_TYPE_H
-#define SQLPP11_DATA_TYPES_TEXT_DATA_TYPE_H
-
 #include <sqlpp11/type_traits.h>
 
 namespace sqlpp
@@ -45,4 +44,3 @@ namespace sqlpp
   using binary = text;
   using varbinary = text;
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/text/expression_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TEXT_EXPRESSION_OPERATORS_H
-#define SQLPP11_DATA_TYPES_TEXT_EXPRESSION_OPERATORS_H
-
 #include <sqlpp11/expression_operators.h>
 #include <sqlpp11/basic_expression_operators.h>
 #include <sqlpp11/type_traits.h>
@@ -69,4 +68,3 @@ namespace sqlpp
     using type = concat_t<wrap_operand_t<L>, wrap_operand_t<R>>;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/text/like.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TEXT_LIKE_H
-#define SQLPP11_DATA_TYPES_TEXT_LIKE_H
-
 #include <sqlpp11/expression_operators.h>
 #include <sqlpp11/alias_operators.h>
 #include <sqlpp11/type_traits.h>
@@ -88,5 +87,3 @@ namespace sqlpp
     return context;
   }
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/text/operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TEXT_OPERAND_H
-#define SQLPP11_DATA_TYPES_TEXT_OPERAND_H
-
 #include <string>
 #include <utility>
 #if __cplusplus >= 201703L
@@ -79,4 +78,3 @@ namespace sqlpp
     return context;
   }
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/text/parameter_value.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TEXT_PARAMETER_VALUE_H
-#define SQLPP11_DATA_TYPES_TEXT_PARAMETER_VALUE_H
-
 #include <sqlpp11/data_types/parameter_value.h>
 #include <sqlpp11/data_types/parameter_value_base.h>
 #include <sqlpp11/data_types/text/data_type.h>
@@ -69,4 +68,3 @@ namespace sqlpp
 #endif
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/text/result_field.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TEXT_RESULT_FIELD_H
-#define SQLPP11_DATA_TYPES_TEXT_RESULT_FIELD_H
-
 #include <sqlpp11/basic_expression_operators.h>
 #include <sqlpp11/result_field.h>
 #include <sqlpp11/result_field_base.h>
@@ -86,4 +85,3 @@ namespace sqlpp
     return os << e.value();
   }
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/text/return_type_like.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2017, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP_RETURN_TYPE_LIKE_H
-#define SQLPP_RETURN_TYPE_LIKE_H
-
 #include <sqlpp11/bad_expression.h>
 
 namespace sqlpp
@@ -40,5 +39,3 @@ namespace sqlpp
   template <typename T, typename Defer>
   using return_type_like_t = typename return_type_like<T, Defer>::type;
 }  // namespace sqlpp
-
-#endif

include/sqlpp11/data_types/text/wrap_operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2013-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TEXT_WRAP_OPERAND_H
-#define SQLPP11_DATA_TYPES_TEXT_WRAP_OPERAND_H
-
 #include <utility>
 #if __cplusplus >= 201703L
 #include <string_view>
@@ -52,4 +51,3 @@ namespace sqlpp
     using type = text_operand;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/time_of_day.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TIME_OF_DAY_H
-#define SQLPP11_DATA_TYPES_TIME_OF_DAY_H
-
 #include <sqlpp11/data_types/time_of_day/data_type.h>
 #include <sqlpp11/data_types/time_of_day/operand.h>
 #include <sqlpp11/data_types/time_of_day/wrap_operand.h>
@@ -34,5 +33,3 @@
 #include <sqlpp11/data_types/time_of_day/column_operators.h>
 #include <sqlpp11/data_types/time_of_day/parameter_value.h>
 #include <sqlpp11/data_types/time_of_day/result_field.h>
-
-#endif

include/sqlpp11/data_types/time_of_day/column_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TIME_OF_DAY_COLUMN_OPERATORS_H
-#define SQLPP11_DATA_TYPES_TIME_OF_DAY_COLUMN_OPERATORS_H
-
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/assignment.h>
 #include <sqlpp11/data_types/time_of_day/data_type.h>
@@ -41,4 +40,3 @@ namespace sqlpp
     using _is_valid_operand = is_valid_operand<time_of_day, T>;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/time_of_day/data_type.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TIME_OF_DAY_DATA_TYPE_H
-#define SQLPP11_DATA_TYPES_TIME_OF_DAY_DATA_TYPE_H
-
 #include <sqlpp11/chrono.h>
 #include <sqlpp11/type_traits.h>
 
@@ -41,4 +40,3 @@ namespace sqlpp
     using _is_valid_operand = is_time_of_day_t<T>;
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/time_of_day/expression_operators.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TIME_OF_DAY_EXPRESSION_OPERATORS_H
-#define SQLPP11_DATA_TYPES_TIME_OF_DAY_EXPRESSION_OPERATORS_H
-
 #include <sqlpp11/expression_operators.h>
 #include <sqlpp11/basic_expression_operators.h>
 #include <sqlpp11/type_traits.h>
@@ -40,4 +39,3 @@ namespace sqlpp
   {
   };
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/time_of_day/operand.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TIME_OF_DAY_OPERAND_H
-#define SQLPP11_DATA_TYPES_TIME_OF_DAY_OPERAND_H
-
 #include <sqlpp11/chrono.h>
 #include <sqlpp11/type_traits.h>
 #include <sqlpp11/alias_operators.h>
@@ -68,4 +67,3 @@ namespace sqlpp
     return context;
   }
 }  // namespace sqlpp
-#endif

include/sqlpp11/data_types/time_of_day/parameter_value.h

@@ -1,3 +1,5 @@
+#pragma once
+
 /*
  * Copyright (c) 2015-2015, Roland Bock
  * All rights reserved.
@@ -24,9 +26,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef SQLPP11_DATA_TYPES_TIME_OF_DAY_PARAMETER_VALUE_H
-#define SQLPP11_DATA_TYPES_TIME_OF_DAY_PARAMETER_VALUE_H
-
 #include <sqlpp11/data_types/parameter_value.h>
 #include <sqlpp11/data_types/parameter_value_base.h>
 #include <sqlpp11/data_types/time_of_day/data_type.h>
@@ -49,4 +48,3 @@ namespace sqlpp
     }
   };
 }  // namespace sqlpp
-#endif