store

问题 I have the below JSON in the typeData variable that is then put into a dojo.data.ItemFileReadStore. What I need to know is how to check the value of status , was it set to "success" or some other value. I've not been able to figure out how to get the value of status from a ItemFileReadStore, any help would be greatly appreciated. var typesData = { status: "success", label: "name", identifier: "value", items: [ {value: 3, name: "Truck"}, {value: 8, name: "Van"}, {value: 6, name: "Car"}, {value

问题 I have the below JSON in the typeData variable that is then put into a dojo.data.ItemFileReadStore. What I need to know is how to check the value of status , was it set to "success" or some other value. I've not been able to figure out how to get the value of status from a ItemFileReadStore, any help would be greatly appreciated. var typesData = { status: "success", label: "name", identifier: "value", items: [ {value: 3, name: "Truck"}, {value: 8, name: "Van"}, {value: 6, name: "Car"}, {value

问题 I have an application without redux, I handle the global state with hooks and the hook useReducer + context. I have 1 useReducer which makes like a Redux store. But to do this I can only send 1 reducer. In that reducer I have all the logic of the states, but I want to separate some functions of that reduce in other reducers. In redux there is the combineReducer to do this. But with hooks + context, how can I do this? How do I combine many reducers to send it to my Global Provider in the

问题 Got the following error: CGDataConsumerCreateWithFilename: failed to open `/name' for writing: Permission denied. With this code (not mine): - (void)createPDFWithName { //NSURL * newFilePath = [[NSURL alloc] initFileURLWithPath:name]; NSString * newFilePath = @"name"; CGRect page = CGRectMake(0, 0, 300, 300); NSDictionary * metaData = nil; if (!UIGraphicsBeginPDFContextToFile(newFilePath, page, metaData )) { NSLog(@"error creating PDF context"); return; } UIGraphicsBeginPDFPage(); [self

问题 I was wondering if I have to do something like this to save the whole store of my app using AsyncStorage in my react-native app and check if it exists when the app is starting. var store; _loadInitialState = async () => { try { var value = await AsyncStorage.getItem(STORAGE_KEY); if (value !== null){ store = value; console.log('Recovered selection from disk: ' + value); } else { store = configureStore({}); console.log('Initialized with no selection on disk.'); } } catch (error) { console.log(

问题 I am currently implementing in-app purchases in an app that I am working for Windows 8. After reading the documentation: Request the license Information for the app: msdn.microsoft.com/en-us/library/windows/apps/windows.applicationmodel.store.licenseinformation.aspx This tells you if the app is trial or not, and the list of products bought using in-app. To perform a purchase you need to use the objects: CurrentApp: In live environment. This will only work when the app is APPROVED in the store

问题 I was wondering whether it's possible to sort some elements first and store them (already sorted) in a variable. I would need to refer to them thought XSLT that's why I'd like to store them in a variable. I was trying to do the following, but it doesn't seem to work <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:variable name="deposits"> <xsl:for-each select="/BookingCostings/MultiDeposits"> <xsl:sort select="substring(@DepositDate, 1, 4)" /> <xsl:sort

问题 im learning how to use the SELECT CASE but i don't understand very well, here is the code: SET @vgls=1; SET @lgls=1; SET @st=SELECT CASE WHEN @vgls=@lgls THEN "emp" WHEN @vgls>@lgls THEN "loc" WHEN @vgls<@lgls THEN "vis" END; SELECT @st; It gives me the following error: [Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to you MySQL server version for the right syntax to use near 'SELECT CASE WHEN @vgls=@lgls THEN "emp" WHEN @vgls>@lgls THEN "loc" WHEN @vg'

问题 What is the best way storing binary or image files? Database System File System Would you please explain , why? 回答1: There is no real best way, just a bunch of trade offs. Database Pros : 1. Much easier to deal with in a clustering environment. 2. No reliance on additional resources like a file server. 3. No need to set up "sync" operations in load balanced environment. 4. Backups automatically include the files. Database Cons : 1. Size / Growth of the database. 2. Depending on DB Server and

问题 I have build a swift game with a "GameViewController.swift" import UIKit import SpriteKit class GameViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() if let scene = GameScene(fileNamed:"GameScene") { // Configure the view. let skView = self.view as! SKView /* Set the scale mode to scale to fit the window */ scene.scaleMode = .AspectFill skView.presentScene(scene) } } } and i have a scene called "GameScene"(it is the default game-file when you open swift and