# UnaryLogicalOperator.h File Reference

`#include <FdoStd.h>`
`#include <Fdo/Filter/Filter.h>`
`#include <Fdo/Filter/LogicalOperator.h>`
`#include <Fdo/Filter/UnaryLogicalOperations.h>`

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## Classes
class | FdoUnaryLogicalOperator
| The FdoUnaryLogicalOperator class derives from FdoLogicalOperator and allows a logical "Not" to be performed against a filter. More...