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--- cpp:mydata.h [2018/09/01 13:15] – ↷ Page name changed from cpp:mydata to cpp:mydata.h allspark
+++ cpp:mydata.h [2021/01/29 11:11] (current) – allspark
@@ Line 1: / Line 1: @@
+# MyData
+class for tracing copy/move operations
+```cpp
+#include <fmt/format.h>
+template<typename T>
+class MyData
+{
+  public:
+    MyData(T value) noexcept : value(value)
+    {
+      fmt::print("{}\n", __PRETTY_FUNCTION__);
+    }
+    operator T() noexcept
+    {
+      return value;
+    }
+    ~MyData() noexcept
+    {
+      fmt::print("{}\n", __PRETTY_FUNCTION__);
+    }
+    MyData(MyData&& other) noexcept : value(other.value)
+    {
+      fmt::print("{}\n", __PRETTY_FUNCTION__);
+    }
+    MyData(const MyData& other) noexcept : value(other.value)
+    {
+      fmt::print("{}\n", __PRETTY_FUNCTION__);
+    }
+    MyData& operator=(MyData&& other) noexcept
+    {
+      if (this == &other)
+      {
+        return *this;
+      }
+      fmt::print("{}\n", __PRETTY_FUNCTION__);
+      value = std::move(other).value;
+      return *this;
+    }
+    MyData& operator=(const MyData& other) noexcept
+    {
+      if (this == &other)
+      {
+        return *this;
+      }
+      fmt::print("{}\n", __PRETTY_FUNCTION__);
+      value = other.value;
+      return *this;
+    }
+  private:
+    T value;
+};
+```

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