[*] A ClusterIP exposes the following: spec.clusterIp:spec.ports[*].port You can only access this service while inside the cluster. It is accessible from its spec.clusterIp port. If a spec.ports[*].targetPort is set it will route from the port to the targetPort. The CLUSTER-IP you get when calling kubectl get services is the IP assigned to this service within … Read more
Well generally C++ Containers are designed to hold objects of a single type using templates. If you want different types that are all derived from one type you can store a container of pointers (I guess you could also have a container of void* to anything…) e.g. std::vector<MyBaseType*>. If you want completely unrelated types, you … Read more
According to the heapq documentation, the way to customize the heap order is to have each element on the heap to be a tuple, with the first tuple element being one that accepts normal Python comparisons. The functions in the heapq module are a bit cumbersome (since they are not object-oriented), and always require our … Read more
I just came across SGLIB while looking for a C implementation of a map/dictionary container. Unfortunately, no map but it seems to include the containers you asked about. I have no idea how good it is. http://sglib.sourceforge.net.
Rather late to the party. But: I would iterate over indices. But not with the classical for loop but instead with a range-based for loop over the indices: for(unsigned i : indices(containerA)) { containerA[i] = containerB[i]; } indices is a simple wrapper function which returns a (lazily evaluated) range for the indices. Since the implementation … Read more
A singleton bean in Spring and the singleton pattern are quite different. Singleton pattern says that one and only one instance of a particular class will ever be created per classloader. The scope of a Spring singleton is described as “per container per bean”. It is the scope of bean definition to a single object … Read more
For space-optimization reasons, the C++ standard (as far back as C++98) explicitly calls out vector<bool> as a special standard container where each bool uses only one bit of space rather than one byte as a normal bool would (implementing a kind of “dynamic bitset”). In exchange for this optimization it doesn’t offer all the capabilities … Read more
The first form is efficient only if vector.size() is a fast operation. This is true for vectors, but not for lists, for example. Also, what are you planning to do within the body of the loop? If you plan on accessing the elements as in T elem = some_vector[i]; then you’re making the assumption that … Read more
I found the nice resource Standard C++ Containers. Probably this is what you all looking for. VECTOR Constructors vector<T> v; Make an empty vector. O(1) vector<T> v(n); Make a vector with N elements. O(n) vector<T> v(n, value); Make a vector with N elements, initialized to value. O(n) vector<T> v(begin, end); Make a vector and copy … Read more