|  | @@ -71,7 +71,8 @@ TripletSparseMatrix::TripletSparseMatrix(int num_rows,
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				|  |  |  }
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				|  |  |  
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				|  |  |  TripletSparseMatrix::TripletSparseMatrix(const TripletSparseMatrix& orig)
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				|  |  | -    : num_rows_(orig.num_rows_),
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				|  |  | +    : SparseMatrix(),
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				|  |  | +      num_rows_(orig.num_rows_),
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				|  |  |        num_cols_(orig.num_cols_),
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				|  |  |        max_num_nonzeros_(orig.max_num_nonzeros_),
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				|  |  |        num_nonzeros_(orig.num_nonzeros_),
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