class OENthAtom : public OESystem::OEUnaryPredicate<OEChem::OEAtomBase>

This class represents OENthAtom functor that identifies the Nth atom (OEAtomBase) is the molecule.

The following methods are publicly inherited from OEUnaryPredicate:

operator() CreateCopy CreatePredicateCopy

The following methods are publicly inherited from OEUnaryFunction:

operator() CreateCopy  


OENthAtom(unsigned int n, unsigned int start=0)

Constructs the functor with the Nth atom specified by ‘n’ and the starting atom specified by ‘start’.


bool operator()(const OEAtomBase &atom) const

Returns true, if iteration over the atoms in the molecule makes the ‘atom’ the Nth atom in the molecule starting with the first atom being the ‘start’ atom.


OESystem::OEUnaryFunction<OEChem::OEAtomBase , bool> *CreateCopy() const

Deep copy constructor that returns a copy of the object. The memory for the returned OENthAtom object is dynamically allocated and owned by the caller.

The returned copy should be deallocated using C++ delete operator in order to prevent a memory leak.