changes-to…

aka_csr.i
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			%{
			#include "aka_csr.hh"
			%}

			namespace akantu {
			%ignore CSR::begin;
			}

			%inline %{
			namespace akantu {
			template <typename T>
			class CSRIterator{

			public:
			CSRIterator(CSR<T> & csr,UInt row) {
			this->it = csr.begin(row);
			this->end = csr.end(row);
			};

			~CSRIterator(){
			};

			T & __next_cpp(){
			if (this->it == this->end) AKANTU_SILENT_EXCEPTION("StopIteration");
			T & ref = *(this->it);
			++this->it;
			return ref;
			}

			private:

			typename CSR<T>::iterator it;
			typename CSR<T>::iterator end;
			};
			}
			%}

			%extend akantu::CSRIterator<akantu::Element>
			{
			%insert("python") %{
			def __iter__(self):
			return self

			def __next__(self):
			try:
			return self.__next_cpp()
			except Exception as e:
			raise StopIteration


			def next(self):
			return self.__next__()

			%}
			}

			%extend akantu::CSR<akantu::Element>
			{
			akantu::CSRIterator<akantu::Element> row(akantu::UInt row){
			return akantu::CSRIterator<akantu::Element>(*$self,row);
			}
			}

			%include "aka_csr.hh"
			namespace akantu {
			%template (CSRUInt) CSR<UInt>;
			%template (CSRElement) CSR<Element>;
			%template (CSRIteratorElement) CSRIterator<Element>;
			}