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vnl_identity.h

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00001 #ifndef vnl_identity_h_
00002 #define vnl_identity_h_
00003 // This is vxl/vnl/vnl_identity.h
00004 
00005 //: \file
00006 //  \author Andrew W. Fitzgibbon, Oxford RRG, 07 Dec 98
00007 
00008 // Modification
00009 // LSB (Manchester) 23/1/01 Tidied documentation
00010 //-----------------------------------------------------------------------------
00011 
00012 #include <vnl/vnl_unary_function.h>
00013 
00014 template <class T>
00015 class vnl_identity : public vnl_unary_function<T,T> {
00016 public:
00017   vnl_unary_function<T,T>* Copy() const {
00018     vnl_identity<T>* copy = new vnl_identity<T>;
00019     *copy = *this;
00020     return copy;
00021   }
00022 
00023   T f(T const& x) {
00024     return x;
00025   }
00026 };
00027 
00028 #endif // vnl_identity_h_

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