containers

问题 I'm experienced with C++, but a little new to C#. When you add objects to a container, are they passed by reference or by value? That is, if I do this: myClass m = new myClass(0); //Assume the class just holds an int List<myClass> myList = new List<myClass>(1); myList.Add(m); myList[0] += 1; Console.WriteLine(m); Console.WriteLine(myList[0]); Will the result be: 0 1 or will it be 1 1 ? If the former, then how can get I make it do the latter? My first instinct was to do something like myClass

问题 Hello I have 2 docker container: one for wordpress and the other for the DB. I want to copy html and php files in the wordpress container for that I saw that it must first stop the container otherwise the copy will not be done. Except that after the copy in the container if I do : docker restart $(docker ps -a -q) I have this error : Error response from daemon: Cannot restart container 035714167b27: network 87e28d3e4121e59f1a3dab6e0afc81db6f273e2585fe22045f3dcd7edcd3ae5d not found Error

问题 I have finished setting up a test Kubernets host running on a bare metal Centos 7. This will be used as a test system as we will be deploying everything in IBM Bluemix Kubernetes service. Getting the configuration from Bluemix is easy... and while our Kubernetes on Centos works OK I don't know how to generate the configuration to access it from our workstations. It is explained at https://kubernetes.io/docs/tasks/administer-cluster/share-configuration/ but I am new to setting up a Kubernetes

问题 I would like to create a timeline in swift, like a timeline in classical music software. What's the container (Collection Views, TableView, Scroll view etc..) looks like to best to design this? 回答1: NSCollectionView gives you the greatest flexibility for designing this, with the background cells rendered as supplementary views. 来源： https://stackoverflow.com/questions/51944682/how-to-create-a-timeline-view-with-draggable-components-in-swift

问题 I have a TcpDevice class which encapsulates a TCP connection, which has an onRemoteDisconnect method which gets called whenever the remote end hangs up. Then, there's a SessionManager object which creates TcpSession objects which take a TcpDevice as a communication channel and inserts them in an internal pointer container for the application to use. In case any of the managed TcpSessions should end, I would like the SessionManager instance to be notified about it and then remove the

问题 I am writing a quadtree class as a part of graphics library and I am facing a design issue. A main goal is to allow the user of the library to easily extend the quadtree with their own Node Types. Each node has a pointer to the first of its four childs. I use the protoype pattern to 'clone' a parent node (its real type is unknown to the library) four times when it is split. So here is the Node class: class CNode { public: virtual CNode* clone(); protected: CNode* pChilds; } The user of the

问题 i have 2 images on my stage underneath an overlay image of 2 frames. The user can drag each image as if they were positioninng each image inside a photo frame. The problem i have is the yoda image in this example can overlap and appear inside the darth vader frame on the left (and vice-versa), as shown here: jsfiddle here: http://jsfiddle.net/vTLkn/ Is there a way of placing the images inside some form of container or rectangle to stop this so they cannot appear inside another 'frame'? The

问题 My initial question was: why does in C++ the contains() function miss in Containers ? So I looked for an explanation and I found something interesting about why some other function are not implemented in all the Containers (essentially because of performance issues and convenience). I know that you can use the find function from algorithm library or you can just write your own function with Iterator , but what I can't understand is why in set , for example, the contains function(where it's

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: question about STL thread-safe and STL debugging I'm currently being engaged in a project which is developed using C++. Recently we are considering replacing some self-defined thread-safe containers with some STL equivalents to gain some efficiency. However, after looking for a while, I found that there is no a thread-safe container provided in STL at all, which surprises quite a lot. Is there any reason? 回答1:

问题 I need something not visible in page, something that don't have any borders and something that doesn't affect page rendering at all. I need this for a mass hiding or showing things inside, like document.getElementById("asd").innerHTML = "blah bla blah and some buttons and etc"; I want it's tag borders to not be shown on the page or changed the rendering at all. For example, I want the rendered result to be same for: <div> asd <input type = "button" value = "dsa" /> <table> <tr> <td>zxc</td> <