state

问题 So I have this: let total = newDealersDeckTotal.reduce(function(a, b) { return a + b; }, 0); console.log(total, 'tittal'); //outputs correct total setTimeout(() => { this.setState({dealersOverallTotal: total}); }, 10); console.log(this.state.dealersOverallTotal, 'dealersOverallTotal1'); //outputs incorrect total newDealersDeckTotal is just an array of numbers [1, 5, 9] e.g. however this.state.dealersOverallTotal does not give the correct total but total does? I even put in a timeout delay to

问题 The application I'm working on contains a main JFrame, from which users might eventually open another supplementary frame. I am trying to implement such a behavior of the app where the supplementary frame is minimized (iconified) as soon as the main frame gets minimized. I was thinking of overriding the setExtendedState method of the main frame to capture the moment when it gets minimised, and then fire property change event from there so that the supplementary frame may act upon to it. I

问题 hi we have a PRISM WPF MVP application, we would like to have a state to share data between the views in the same module. Since PRISM by default doesnt have a state, was wondering if there is any way i could implement this. Presently i have injected a State with Dictionary as back-store, but the problem is its Global i.e available across the modules. i would really like to scope this injection being module specific. I believe unity allows registering different classes to the same interface

问题 I have two text inputs on modal screen, when I'm filling first input - state is updated, and when I jump on second input and start typing - value of the first input is empty. Here is code: constructor(){ super() this.state={ Modal: { EduModalVisible: false, ProTitleModalVisible: false, PsychoModalityModalVisible: false, }, User: { NameOfFaculty: '', YearOfGraduate: '', } } } And text input looks like this: <TextField label={'Faculty'} highlightColor={'#76a6ef'} value={this.state.User

问题 We have the following React Component Hierarchy on a particular page. <Page> .... <GoogleMap> .... </GoogleMap> .... <BoxList> <Box>(lazy loaded 'n' at a time as you scroll and hit bottom, upto 400) ......(Some other box info that needs to be updated incrementally) <ItemList> <Item> (Upto 20 per Box/ItemList) ......(Some item Info that needs to be updated incrementally) </Item> <Item>...</Item> .... </ItemList> </Box> <Box>....</Box> .... </BoxList> </Page> On page load and as the user

问题 I was wondering how to detect whether the button was hidden or not, and how much alpha was applied to it. Then, when viewDidLoad is called, these values can be applied to make the buttons the same state they were left in when the application closed. How can I code this? Thanks, James 回答1: If, as your title suggests, you want to use NSUserDefaults , then you can set them like this: -(void)saveButtonState:(UIButton*)button { NSUserDefaults defaults = [NSUserDefaults standardUserDefaults];

问题 I have an app that is rendering correctly on initial load. It is rendering data from a json obj I'm passing in as a prop. I'm saving the data in an array in state. Later async calls occur. Using setState I update the state accordingly. When React re-renders however it does two passes -- one with the correct, new state that I can see when I step through, then one with the initial state. The initial state render occurs last so I'm left with the same initial state. What gives? updateTab = React

问题 I am planning to use XState for managing states in the backend of my application. When an api is called, a function will be called on successful state change. The result of the function call has to be returned as response of the api. // Returns a Promise, e.g.: // { // id: 42, // name: 'David', // friends: [2, 3, 5, 7, 9] // friend IDs // } function getUserInfo(context) { return fetch('/api/users/#{context.userId}').then(response => response.json() ); } // Returns a Promise function

问题 I'm trying to remove an eventlistener on (in this specific case) a HorizontalList. The list is initialized with the property itemRollOver="playPreview(event)" I'd like to remove this eventListener by switching state and stating something like: <mx:SetEventHandler target="{horList}" name="itemRollOver" handlerFunction="null" /> This doesn't seem to work. The event is still handled and playPreview(event:ListEvent) is still called. How to properly do this? (I know I can do it in Actionscript,

问题 I have a react-big-calendar, I want when I click on new event, the dialog of the hour will be having the values of the hour clicked on the new event, for example, I click the mouse from 07:30 to 08:30, so I want to get this hour on my dialog as the value of the input of start and end state, but, I have the same dialog by clicking on the button "Ajouter disponibilité" which his position is above of the calendar, when I click it I will have the hour of the moment, and at both of them I can