state

问题 I have an image on my site that can be clicked. Once clicked jquery changes the image and runs an ajax query. I'm not looking to have the image state remembered. It will either be ON or OFF. I know I should be using cookies or local storage, but I need to make sure this works with some possibly old browsers, and I've no idea how to approach saving the state.. The code I'm using to toggle the image is : jQuery(function(){ $(".img-swap").live('click', function() { if ($(this).attr("class") ==

问题 I'm trying to extend the code in this post (accepted answer) to allow me to be able to call randomGen2 to get a random number, based on the function randomGen which takes a seed as an argument. But everytime I call randomGen2, despite returning an Int, I get an error about not been able to print Random (when infact I am only trying to print Int). <interactive>:3:1: No instance for (Show (Random Int)) arising from a use of `print' Possible fix: add an instance declaration for (Show (Random Int

问题 I'm building a web application in ASP.Net 4.0 which must maintain an in-memory state shared between users (better to say between group of user). It is not a standard application and the state related to a group of users are/can/should be persisted only after a group of actions are completed (which can take half an hour). This requirement can't be changed. As far as i know I can't rely in an in-proc memory because a recycle will clear my state. The only solution I found is to create a standard

问题 When designing a class, should logic to maintain valid state be incorporated in the class or outside of it ? That is, should properties throw exceptions on invalid states (i.e. value out of range, etc.), or should this validation be performed when the instance of the class is being constructed/modified ? 回答1: It belongs in the class. Nothing but the class itself (and any helpers it delegates to) should know, or be concerned with, the rules that determine valid or invalid state. 回答2: Yes,

问题 I've seen a lot of info on changing the button image for selected but being a new I'm having a bit of trouble implementing a simpler version of it. When the button is pressed it goes dark and I would like it to stay that way once it's been selected. So there are a few questions. Do I create IBOutlet for the button and then and IBAction to change the state with something like button.state = SELECTED. Sorry for the complete lack of any code to look at. Edit: (id)sender is the button object

问题 I'm using ms botbuilder v 4 I'm using webcontrol, webchat.js, latest, react Case is pretty trivial: I want to show list of possible values in dropdown, values will be dynamic (comes from API, i need Titles and Values (Ids) there. Then when user selects some item and clicks OK i want to get value (Id) and work further with that. As i got it for now only way to show dropdown is using adaptive cards, in v3 there was an option to use adaptive cards in prompts and it also planned for next version:

问题 When I close the modal, I need to detect that it has been closed to change the state of the parent page. Not being able to change it when I change any property of the state, the modal. ExpertFeedback.js import ModalExpertFeedback from './ModalExpertFeedback'; export default class ExpertFeedback extends Component { constructor(props) { super(props); this.state = { modalVisible: false, projects: [{name:'project0', name:'project1'}], feedback: {title: '', content: '', project_id: ''} }; }

问题 I would like to check whether a certain javax.swing.JButton (regular push-button) is pressed down (before it was released). Is there any option at all to check whether a button is down? The most trivial solution is to add a MouseListener that will respond to the mouse click and release events. But, this does not cover the case where the button was activated by the Enter key, or any other way. I don't want to disable activating the mouse by keyboards or other ways - I just want to know when is

问题 I have the following state configuration: $stateProvider .state('customer', { url: '/customers', templateUrl: 'app/components/customer/templates/main.tpl.html', views: { 'list': { templateUrl: 'app/components/customer/templates/list.tpl.html', controller: 'ListCtrl as ctrl' } }, resolve: { customerList: function ($stateParams, CustomerResource) { console.log('trying to resolve'); var list = CustomerResource.list($stateParams); return list; } } }) Here is the main template: <div class=

问题 I'm trying to build an Expense tracker App in Flutter and has decided to use Scoped Model for state management. The App has a User who can have many Accounts and each account can have many Transactions. How do I model these to be used with Scoped Model, I am stuck on selecting a good Architecture. If I create a UserModel that has a list of Accounts where each Account is an AccountModel then triggering and update from inside AccountModel would not trigger the ones accessing the UserModel class