lazy-loading

问题 I'm creating a chat app in Angular 4 which stores and reads messages in and from the Firebase database. I've written a query to retrieve only the latest 10 messages of that specific conversation. this.messages = this.db.list('messages/' + conversationId, { query: { limitToLast: 10 } }); db: AngularFireDatabase, messages: FirebaseListObservable Now I want to retrieve the 10 older messages when somene presses the 'more' button (or scrolls to the top) and I'm having difficulties writing a query

问题 I have a page with dynamically generated table ( rows are dynamically generated ). In my test I do NOT know how many rows to expect . I just create a dictionary from all the rows and then compare to another dictionary. But the table has lazy load, so when the number of rows is higher, some of the rows which should be there are not visible "on the first sight" but it needs to be scrolled down to get them. So those rows are not included into my dictionary and then it fails... But again, I do

问题 I've just implemented GSON to Fedor's LazyLoading ListView. That means the app saves the downloaded images and texts from the web to the external storage though an ImageLoader class. and I wonder why how to make this listview accessible without an internet connection. Here I give you a snippet of my ListView Class: public class ProjectsList extends Activity { ListView lstTest; ProjectAdapter arrayAdapter; ArrayList<Project> prjcts=null; @Override public void onCreate(Bundle savedInstanceState

问题 I have had a go at implementing lazy loader on my site. See the sandbox here: http://www.brencecoghill.com/projects/north-vietnam/ the following text was added to my isotope to make this work (along wit the necessary html and linking to the library from the header): $("img").lazyload({ event : 'scroll', effect : 'fadeIn', appear: function(){ } }); This appears to work fine in firefox, but is a total fail in IE (i tested with version 8) - just displaying grey boxes. how do I fix this to work

问题 Can we defer a variable initialization untill it is needed ? What I would like to do is predefine some variables in my profile that will contain a list of AD computer: let's say I want: $OU1_workstation to be fill with computers found in OU=workstations,OU=OU1,dc=domain,dc=com $OU2_workstation fill with computers found in OU=workstations,OU=OU2,dc=domain,dc=com and so on... I use the following script to do it but it takes 30sec to compute, so currently I can't put that in my profile... Get

问题 I'm using Mika Tuupola's Lazy Load, which is excellent, but need to delay loading even when image above the fold... So, user scrolls, when image in view I want to delay 400ms then show the image. There is a way to increase threshold so images load before shown, but not other way. I've searched docs on github and can't find a way to do this without reinventing wheels. Has anyone done this? I know it might seem strange but there's a valid reason for wanting to do it. 回答1: From the docs: I

问题 I have an Entity with a OneToOne relation that is fetched lazily: @Entity public class Person { @Id private Integer id; @Column(length=60) private String address; @OneToOne(fetch=FetchType.LAZY) @JoinColumn(name="idProvince") private Province province; } This is the test I do, trying to get all the entities and to serialize them as JSON, using the JSONUtil class in JSONPlugin (the 'official' json plugin for Struts 2): List<Person> people = personService.findAll(); String result = JSONUtil

问题 I am using Hibernate in my object and getting lazyinitializationexception even when session is not closed. Here is the relation of the objects in issue. There are 3 Objects: ObjectA ObjectB ObjectC ObjectA includes ObjectB as FetchType=EAGER ObjectB includes ObjectC as FetchType=LAZY We are fetching ObjectA. So, because of eager fetch type, it is automatically fetching ObjectB. But when I am trying to fetch ObjectC using ObjectB, it is giving this error. The code is too big and proprietary.

问题 I tried the same code as mentioned in the link below, but for some reason on my end it loads (clones) only the items from the current page, not the ones from the next page ???? Any ideas why ? How to add Infinite Scroll to BigCommerce Category page <ul class="productGrid" data-infinite-scroll='{ "path": ".pagination-link", "append": ".product", "history": false }'> {{#each products}} <li class="product"> {{>components/products/card show_compare=../show_compare show_rating=../settings.show

问题 In my angular 8 application, I have 3 lazy-loading modules. Each module is for a specific user's role. I'm using canActivate interface for Auth and Role Guard. For the following route { path : '' , pathMatch : 'full' , redirectTo : ''} how should I use redirectTo property, so it redirects to a lazyloaded route based on user role . This is the code for routing module. app.routing.module.ts import { NgModule } from '@angular/core'; import { Routes, RouterModule } from '@angular/router'; const