added comments about explicit

drivers/common/include/orm/drivers/sqlfield.hpp

@@ -38,7 +38,7 @@ namespace Orm::Drivers
         using enum RequiredStatus;
 
         /*! Constructor. */
-        explicit SqlField(QString fieldName = {}, QMetaType metaType = {},
+        explicit SqlField(QString fieldName = {}, QMetaType metaType = {}, // explicit is needed as still can act as converting constructor if only the fieldName is passed
                           QString tableName = {});
         /*! Default destructor. */
         ~SqlField() = default;

drivers/common/include_private/orm/drivers/support/sqlrecordcache_p.hpp

@@ -20,7 +20,7 @@ namespace Orm::Drivers::Support
         /*! Determine if a SqlRecord is cached. */
         constexpr bool has() const noexcept;
         /*! Determine if a SqlRecord is cached. */
-        constexpr explicit operator bool() const noexcept;
+        constexpr explicit operator bool() const noexcept; // explicit is always desirable with the operator bool() to avoid unintentional conversions
 
         /*! Retrieve a SqlRecord from the cache. */
         constexpr SqlRecord &get();

include/orm/schema/grammars/mysqlschemagrammar.hpp

@@ -25,7 +25,7 @@ namespace Grammars
 
     public:
         /*! Constructor. */
-        inline explicit MySqlSchemaGrammar(bool isMaria = false);
+        inline explicit MySqlSchemaGrammar(bool isMaria = false); // explicit is needed as still can act as converting constructor if the isMaria is passed
         /*! Virtual destructor. */
         ~MySqlSchemaGrammar() override = default;