In this C++11 solution all map items are kept in constexpr array and there are constexpr recursive functions to search by either key or value. #include <utility> using Item = std::pair<int, int>; constexpr Item map_items[] = { { 6, 7 }, { 10, 12 }, { 300, 5000 }, }; constexpr auto map_size = sizeof … Read more
Here is a more elegant and scalable solution, imo. It’ll work for any nxn matrix and you may find use for the other methods. Note that getMatrixInverse(m) takes in an array of arrays as input. Please feel free to ask any questions. def transposeMatrix(m): return map(list,zip(*m)) def getMatrixMinor(m,i,j): return [row[:j] + row[j+1:] for row in … Read more
^((?!hello).)*$ works in Notepad++ 6. I wonder if it’s better than this: ^(?!.*hello).*$
I found an answer to this. The mappedBy attribute of @OneToMany annotation behaves the same as inverse = true in the xml file.
Actually, you don’t have to swap the different quadrants, it’s needed only if you’re a human and want a more natural looking visualization of the FFT result (i.e. with the 0 frequency in the middle, negative frequencies left/bottom and positive frequencies up/right). To invert the FFT, you need to pass the result of the forward … Read more
As Matthieu says, the only case where you wouldn’t want to set inverse = true is where it does not make sense for the child to be responsible for updating itself, such as in the case where the child has no knowledge of its parent. Lets try a real world, and not at all contrived … Read more
In case of many-to-many relation through intermediary table; “Cascade” says whether a record will be created/updated in the child table. Whereas “Inverse” says whether a record will be created/updated in the intermediary table e.g. Assume below scenario 1 student can have multiple phones. So Student class has property for Set of phones. Also 1 Phone … Read more
Here is a method that will do just that. public double[] AverageReverse(double targetAverage, double range) { var r = new Random(); // TODO: Cache it between calls to avoid “why does ny Random class only produce the same numbers?” var n1 = targetAverage – r.NextDouble() * range; var n2 = targetAverage + r.NextDouble() * range; … Read more