stateful

问题 I would like to ask you some help for creating my custom layer. What I am trying to do is actually quite simple: generating an output layer with 'stateful' variables, i.e. tensors whose value is updated at each batch. In order to make everything more clear, here is a snippet of what I would like to do: def call(self, inputs) c = self.constant m = self.extra_constant update = inputs*m + c X_new = self.X_old + update outputs = X_new self.X_old = X_new return outputs The idea here is quite

问题 In Flutter, StatefulWidget has dispose() and deactivate() . How are they different? 回答1: dispose is definitive. deactivate is not. deactivate is called when a widget may be disposed. But that is not guaranteed. A typical situation where deactivate is called but not dispose ,is when moving widgets in the widget tree using a GlobalKey . 来源： https://stackoverflow.com/questions/56387243/difference-between-deactivate-and-dispose

问题 I have a naïve version of a PokerApp running as an Azure Website. The server stores in its memory the state of the tables, (whose turn it is, blinds value, cards…) etc. The problem here is that I don't know how much I can rely on the WebServer's memory to be "permanent". A simple restart of the server would cause that memory to be lost and therefore all the games in progress before the restart would get lost / cause trouble. I've read about using TableStorage to keep session data and share it

问题 Given that JavaServer Faces is inherently stateful on the server side, what methods are recommended for horizontally scaling a JSF 2.0 application? If an application runs multiple JSF servers, I can imagine the following scenarios: Sticky Sessions: send all requests matching a given session to the same server. Question: what technology is commonly used to achieve this? Problem: server failure results in lost sessions... and generally seems like fragile architecture, especially when starting

问题 Is it possible to declare a new type (an empty struct , or a struct without an implementation) on the fly? E.g. constexpr auto make_new_type() -> ???; using A = decltype(make_new_type()); using B = decltype(make_new_type()); using C = decltype(make_new_type()); static_assert(!std::is_same<A, B>::value, ""); static_assert(!std::is_same<B, C>::value, ""); static_assert(!std::is_same<A, C>::value, ""); A "manual" solution is template <class> struct Tag; using A = Tag<struct TagA>; using B = Tag

问题 I just went through the specification of http 1.1 at http://www.w3.org/Protocols/rfc2616/rfc2616.html and came across a section about connections http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8 that says " A significant difference between HTTP/1.1 and earlier versions of HTTP is that persistent connections are the default behavior of any HTTP connection. That is, unless otherwise indicated, the client SHOULD assume that the server will maintain a persistent connection, even after

问题 I just went through the specification of http 1.1 at http://www.w3.org/Protocols/rfc2616/rfc2616.html and came across a section about connections http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8 that says " A significant difference between HTTP/1.1 and earlier versions of HTTP is that persistent connections are the default behavior of any HTTP connection. That is, unless otherwise indicated, the client SHOULD assume that the server will maintain a persistent connection, even after

问题 I am learning flutter and I am working with tabBars and I am having an issue with saving the state. I have put a small working example of my issue below. Basically, there is a button and a stateful counter. When I click the button, I see the text field update correctly. But, when I switch to a different tab and come back, the text field is back to zero. I have found if i move the following line outside of _CounterState so its defined at the top level of the file, then, it works correctly.

问题 What kind of server do you people see in real projects? 1) Web Services MUST be stateless: Basically you must send username/password with every request, every request must use HTTPS and I will authenticate and load the User object everytime if needed. 2) A Session for Web Services: like in a web container so I can at least save the authenticated User object and have something similar to a session ID so I don't need to authenticate, load and check the User on every request. 3) Sticky Service

问题 On a glassfish 3.1 server, I have a @Stateful session bean which is injected into another stateful session bean. The stateful session bean which is injected presents my entity access layer, it itself has it's EntityManager injected with @PersistenceContext and it looks like this. @Stateful MyEAO { @PersistenceContext EntityManager em; MyEAO() { // default constructor } .... } This access layer is injected into another stateful bean: @Stateful public class ShopAdmin implements