stateless

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How would I go about testing if a lambda is stateless, that is, if it captures anything or not? My guess would be using overload resolution with a function pointer overload, or template specialization? int a; auto l1 = [a](){ return 1; }; auto l2 = [](){ return 2; }; // test l1 and l2, get a bool for statelessness. 回答1: As per the Standard, if a lambda doesn't capture any variable, then it is implicitly convertible to function pointer. Based on that, I came up with is_stateless<> meta-function which tells you whether a lambda is stateless or

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I just figured out that I can actually store objects in the $_SESSION and I find it quite cool because when I jump to another page I still have my object. Now before I start using this approach I would like to find out if it is really such a good idea or if there are potential pitfalls involved. I know that if I had a single point of entry I wouldn't need to do that but I'm not there yet so I don't have a single point of entry and I would really like to keep my object because I don't lose my state like that. (Now I've also read that I should

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: i am reading spring through its official documentation and at one place i came to a line that use prototype scope for for all statefull beans while singleton for stateless beans. i know there is something as statefull as well stateless beans in EJB but this is not what they have mentioned in the documents. Can any one explain me what exact this means of statefull as well stateless beans in Spring Thanks in advance 回答1: From spring perspective stateless beans: beans that are singleton and are initialized only once. The only state they have is

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I created a stateful service with the out-of-the-box partitioning: <StatefulService ServiceTypeName="ExamplesServiceType" TargetReplicaSetSize="[ExamplesService_TargetReplicaSetSize]" MinReplicaSetSize="[ExamplesService_MinReplicaSetSize]"> <UniformInt64Partition PartitionCount="[ExamplesService_PartitionCount]" LowKey="-9223372036854775808" HighKey="9223372036854775807" /> </StatefulService> The service manifest sets the params to (out-of-the-box as well): <Parameter Name="ExampleService_PartitionCount" Value="1" /> <Parameter Name=

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Stateless beans in Java do not keep their state between two calls from the client. So in a nutshell we might consider them as objects with business methods. Each method takes parameters and return results. When the method is invoked some local variables are being created in execution stack. When the method returns the locals are removed from the stack and if some temporary objects were allocated they are garbage collected anyway. From my perspective that doesn’t differ from calling method of the same single instance by separate threads. So

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I was hoping that changing into create-session="stateless" would be the end of it to achieve stateless spring security in my webapp, but it is not so. With that change, the spring security seems to be not working, since (my assumption) spring security doesnt store anything in the session, and cannot do authentication to secured web requests. How do i make use of this stateless feature ? I cannot seem to find any relevant examples yet on how to achieve stateless spring security for a stateless webapp. Thank you ! 回答1: I have a Spring-based

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have written simple application with container-managed security. The problem is when I log in and open another page on which I logout, then I come back to first page and I click on any link etc or refresh page I get this exception. I guess it's normal (or maybe not:)) because I logged out and session is destroyed. What should I do to redirect user to for example index.xhtml or login.xhtml and save him from seeing that error page/message? In other words how can I automatically redirect other pages to index/login page after I log out? Here

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've created a small ReactJS dashboard with the help of SocketIO for live updates. Even though I have the dashboard updating, it bugs me that I'm not quite sure if I did it correctly. What bugs me the most is the Props in getInitialState as anti-pattern post. I've created a dashboard that gets live updates from a server, requiring no user interaction beyond loading the page. From what I've read, this.state should contain things that will determine whether the component should be re-rendered, and this.props .... I don't know yet. However,

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Using TypeScript with React we no longer have to extend React.Props in order for the compiler to know that all react component props can have children: interface MyProps { } class MyComponent extends React.Component { public render(): JSX.Element { return {this.props.children} ; } } However, it doesn't seem to be the case for stateless functional components: const MyStatelessComponent = (props: MyProps) => { return ( {props.children} ); }; Emits the compile error: Error:(102, 17) TS2339: Property 'children' does not exist on type 'MyProps'.

I'm going to implement OAuth 2.0 and REST API with it to grant different permissions per users and also to scale well. To scale well, stateless is easier because there is NO file, database, in-memory based session with it. Below is how I understand OAuth 2. OAuth Server give an access token to a user. The user's access token is stored in cookie. When user access to REST API, user sends with the access token. Server receives request with access token. Server find out whether access token is valid and the user has permission to do request. Do or reject based on user's privilege. So I do not have