- o -

• opening() : paranthesis_matching.cpp
• operator*() : ordinary_least_squares_regressor.cpp
• operator+() : ordinary_least_squares_regressor.cpp
• operator-() : ordinary_least_squares_regressor.cpp
• operator/() : ordinary_least_squares_regressor.cpp
• operator<<() : lu_decompose.cpp , ordinary_least_squares_regressor.cpp