1 files changed, 4 insertions, 3 deletions
diff --git a/flowgraph/data.h b/flowgraph/data.h
index d1c2588..e2def93 100644
--- a/flowgraph/data.h
+++ b/flowgraph/data.h
@@ -27,9 +27,10 @@ namespace FlowGraph {
  class Data
  {
  public:
-  Data(DataType type, std::shared_ptr<Storage> storage): m_type(type), m_storage(storage) {}
-  DataType type() const { return m_type; }
-  std::shared_ptr<Storage> storage() { return m_storage; }
+  Data(DataType type, std::shared_ptr<Storage> storage);
+  DataType type() const;
+  std::shared_ptr<Storage> storage() const;
+  bool operator==(const Data& other) const;
  private:
   const DataType m_type;
   std::shared_ptr<Storage> m_storage;