Put all of your “state” data in one place and use a pickle. The pickle module implements a fundamental, but powerful algorithm for serializing and de-serializing a Python object structure. “Pickling” is the process whereby a Python object hierarchy is converted into a byte stream, and “unpickling” is the inverse operation, whereby a byte stream … Read more
Based on your question, I think you’re confused about the definition of “global”. In a stock Flask setup, you have a Flask server with multiple threads and potentially multiple processes handling requests. Suppose you had a stock global variable like “itemlist = []”, and you wanted to keep adding to it in every request – … Read more
Read Functional Programming in a Nutshell. There are lots of advantages to stateless programming, not least of which is dramatically multithreaded and concurrent code. To put it bluntly, mutable state is enemy of multithreaded code. If values are immutable by default, programmers don’t need to worry about one thread mutating the value of shared state … Read more
HTTP — that is the actual transport protocol between the server and the client — is “stateless” because it remembers nothing between invocations. EVERY resource that is accessed via HTTP is a single request with no threaded connection between them. If you load a web page with an HTML file that within it contains three … Read more
I see 4 issues with your code: In your timer method you are always setting your current count to 10 You try to update the state in render method You do not use setState method to actually change the state You are not storing your intervalId in the state Let’s try to fix that: componentDidMount: … Read more
1.On Child Widget : add parameter Function paramter class ChildWidget extends StatefulWidget { final Function() notifyParent; ChildWidget({Key key, @required this.notifyParent}) : super(key: key); } 2.On Parent Widget : create a Function for the child to callback refresh() { setState(() {}); } 3.On Parent Widget : pass parentFunction to Child Widget new ChildWidget( notifyParent: refresh ); … Read more
What Microsoft says ASP.NET includes application state primarily for compatibility with classic ASP so that it is easier to migrate existing applications to ASP.NET. It is recommended that you store data in static members of the application class instead of in the Application object. This increases performance because you can access a static variable faster … Read more
Since there’s a lot of misinformation in this thread, here’s how you can do it without helper libs: handleChange: function (e) { // 1. Make a shallow copy of the items let items = […this.state.items]; // 2. Make a shallow copy of the item you want to mutate let item = {…items[1]}; // 3. Replace … Read more
This is a known use case. There are different solutions. For example, one can use vuex-persistedstate. This is a plugin for vuex to handle and store state between page refreshes. Sample code: import { Store } from ‘vuex’ import createPersistedState from ‘vuex-persistedstate’ import * as Cookies from ‘js-cookie’ const store = new Store({ // … … Read more
I got resolve it with this tip WPF TabControl: Turning Off Tab Virtualization at http://www.codeproject.com/Articles/460989/WPF-TabControl-Turning-Off-Tab-Virtualization this a class of TabContent with property IsCached.