外文分享

问题 Using VB6 In a form, 2 listbox name as list1, list2 and 4 buttons name >, >>, <, << I want to add the list1 selected items to list2 I want to remove the selected items from list2 to list1 How to do this. Need Vb6 code Help 回答1: Generally, your approach will be to loop through the index values of all items in your source ListBox. If you're moving all items on the ListBox then for each item you'd call the AddItem method on your destination ListBox (using the index value to retrieve the text of

问题 I am designing a website with angular4, and have a component that inside uses the @angular/material sidenav. Within that sidenav i have <router-outlet></router-outlet> . my app.module has all the necessary imports and declarations, I have a app-routing module that contains the following code for the component: const appRoutes: Routes = [ { path: 'reg', component: RegComponent, children: [ { path: ':info', component: RegInfoComponent }, { path: ':ther', component: RegTherComponent } ]}, ]; I

问题 I wanna to disconnect all connection on a session from server but i just find how to dissconnect a connection by using forceDisconnect. Besides, I wanna destroy session when all connection disconnected and destroy token when a connection disconnected 回答1: Opentok SDET here, You can use forceDisconnect , if you want to trigger the disconnection from a single point, or use disconnect and capture StreamDestroyed events in remote peers, to act accordingly. Regarding sessions, you don't need to

问题 https://maps.googleapis.com/maps/api/js?libraries=places&key=XXX This is inside index.html file, but i want to lazy load this script, because that module is lazy loaded and it's really not necessary for all users. I can't use trick with directly accessing the DOM and appending script el. because I want to use Angular Universal ( SSR ). 回答1: You can access the DOM even if you are using SSR. Add this to your lazy loaded module module or one of the components of your lazy loaded module import

问题 Are there any production best practices (tuning and similar) to follow to avoid: Performance issues Uncontrolled data growth Are also there any cleanup utilities or best practices in order to remove "old" or unnecessary data? Could the usage of MongoDB solve eventual of performance or data maintenance problems? 回答1: There is one performance hint -- keep Javers data small. You should control the number of Snapshots persisted to JaversRepository. Applications should track changes only in

问题 I have got in the DB data like you can see below (additional info about dates: date in valid_from is included, date in valid_to is excluded) obj_number obj_related valid_from valid_to AA BB 01.01.2018 01.01.2019 AA BB 01.01.2019 31.03.2019 AA BB 31.03.2019 AA CC 01.01.2020 30.06.2020 AA CC 02.07.2020 31.10.2020 AA CC 31.10.2020 31.12.2020 AA DD 01.01.2018 30.11.2020 AA DD 30.11.2020 31.12.2020 I have to merge the data, but in a special way. It should be merged around obj_related to show the

问题 I wanna to disconnect all connection on a session from server but i just find how to dissconnect a connection by using forceDisconnect. Besides, I wanna destroy session when all connection disconnected and destroy token when a connection disconnected 回答1: Opentok SDET here, You can use forceDisconnect , if you want to trigger the disconnection from a single point, or use disconnect and capture StreamDestroyed events in remote peers, to act accordingly. Regarding sessions, you don't need to

问题 I am using xCode 7 beta and swift, and storing my data using Parse.com. In which method in the UITableViewController should I be asking for data from my database? I need to ensure it is all present by the point in the lifecycle of the controller at which the cells need to be presented. Is there anyway to guarantee this if I am loading data asynchronously? 回答1: viewDidLoad would be a good place for this but there might be a few second difference between displaying a blank tableView and when it

问题 My payment gateway requires ssl certificate pinning for their payment gateway endpoint on my side. Does Firebase support ssl pinning for cloud functions/hosting? I can't find this information in the official documentation or anywhere else on the net. Details published in the bank's technical requirements form: Response URL and Port Number Specify the Response URL and Port Number for us to send you payment notification. SSL Certificate: (To establish secure connection with your Response URL.)

问题 I followed the answer in the following link for improving the performance of entity framework for bulk inserts and updates. Improving bulk insert performance in Entity framework Made save changes in batch of 1000 regeneration of the DbContext object after every save changes I got the performance boost as expected. But I have a requirement of rolling back the transaction while exception condition while performing bulk insert. This becomes issue when we re initialize the DbContext object. Is