Approach #1 Here’s a vectorized approach – m,n,r = volume.shape x,y,z = np.mgrid[0:m,0:n,0:r] X = x – roi[0] Y = y – roi[1] Z = z – roi[2] mask = X**2 + Y**2 + Z**2 < radius**2 Possible improvement : We can probably speedup the last step with numexpr module – import numexpr as ne … Read more
Use th:block as stated in the Thymeleaf guide th:block is a mere attribute container that allows template developers to specify whichever attributes they want. Thymeleaf will execute these attributes and then simply make the block disappear without a trace. So it could be useful, for example, when creating iterated tables that require more than one … Read more
From C++1z/17, you can use structured bindings: #include <iostream> #include <map> #include <string> int main() { std::map<int, std::string> m; m[1] = “first”; m[2] = “second”; m[3] = “third”; for (const auto & [key, value] : m) std::cout << value << std::endl; }
You’re looking for the break statement.
You could just iterate over the indices of the range of the len of your list: dataList = [{‘a’: 1}, {‘b’: 3}, {‘c’: 5}] for index in range(len(dataList)): for key in dataList[index]: print(dataList[index][key]) or you could use a while loop with an index counter: dataList = [{‘a’: 1}, {‘b’: 3}, {‘c’: 5}] index = 0 … Read more
When and if you should use auto&& in for loops has been explained very nicely by Howard Hinnant here. This leaves the question what x in auto &&x = …expr… actually is. And it is handled as if there there were a function template definition template <class U> void f(U&& u); and the type of … Read more
That clearly depends on the particular implementation of the interpreter/compiler of the specific language. That said, theoretically, any sane implementation is likely to be able to implement one in terms of the other if it was faster so the difference should be negligible at most. Of course, I assumed while and for behave as they … Read more
This is because there is only a single loop variable chart, and in each iteration just a new value is assigned to it. So if you attempt to take the address of the loop variable, it will be the same in each iteration, so you will store the same pointer, and the pointed object (the … Read more
Javascript objects don’t have a guaranteed inherent order, so there doesn’t exist a “reverse” order. 4.3.3 Object An object is a member of the type Object. It is an unordered collection of properties each of which contains a primitive value, object, or function. A function stored in a property of an object is called a … Read more
Just in case, if someone is looking for a similar problem… Most solutions given here are one line and are quite readable and simple. Just wanted to add one more that does not need the use of lambda(I am assuming that you are trying to use lambda just for the sake of making it a … Read more