| # Gaudi Framework, version v20r3
Generated: 24 Nov 2008

# DataHistory.h File Reference

`#include "GaudiKernel/HistoryObj.h"`
`#include <vector>`
`#include <string>`
`#include <iostream>`
`#include "GaudiKernel/StatusCode.h"`
`#include "GaudiKernel/ClassID.h"`

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## Classes
class | DataHistory
| DataHistory class definition. More...
class | DataHistory::DataHistoryOrder
## Functions
std::ostream & | operator<< (std::ostream &lhs, const DataHistory &rhs)

## Function Documentation

std::ostream& operator<< | ( | std::ostream & | lhs,
|  | const DataHistory & | rhs |
| ) |  |  |