rows function rows(X:LLT) -> Integer64 Number of rows of a symmetric positive definite matrix. function rows(X:Object[_,_]) -> Integer64 Number of rows of a matrix. function rows(X:Real[_,_]) -> Integer64 Number of rows of a matrix. function rows(X:Integer[_,_]) -> Integer64 Number of rows of a matrix. function rows(X:Boolean[_,_]) -> Integer64 Number of rows of a matrix.