printer

include/limestone/api/write_version_type.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2022-2023 Project Tsurugi.
+ * Copyright 2022-2024 Project Tsurugi.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,7 @@
 
 #include <string>
 #include <cstdint>
+#include <ostream>
 
 #include <limestone/api/epoch_id_type.h>
 
@@ -45,6 +46,10 @@ class write_version_type {
         return this->epoch_number_ < value.epoch_number_;
     }
 
+    friend std::ostream& operator<<(std::ostream& out, const write_version_type& wv) {
+        return out << std::string{"wv{"} << wv.epoch_number_ << "," << wv.minor_write_version_ << "}";
+    }
+
 private:
     /**
      * @brief For PITR and major write version