lazy-loading

问题 I see the following exception message in my IDE when I try to get lazy initialized entity (I can't find where it is stored in the proxy entity so I can't provide the whole stack trace for this exception): Method threw 'org.hibernate.LazyInitializationException' exception. Cannot evaluate com.epam.spring.core.domain.UserAccount_$$_jvste6b_4.toString() Here is a stack trace I get right after I try to access a field of the lazy initialized entity I want to use: org.hibernate

问题 I see the following exception message in my IDE when I try to get lazy initialized entity (I can't find where it is stored in the proxy entity so I can't provide the whole stack trace for this exception): Method threw 'org.hibernate.LazyInitializationException' exception. Cannot evaluate com.epam.spring.core.domain.UserAccount_$$_jvste6b_4.toString() Here is a stack trace I get right after I try to access a field of the lazy initialized entity I want to use: org.hibernate

问题 What is the best possible way to apply lazy load in Flatlist in react native. Currently there is infinite scroll in the flatlist. I am new to React native so i dont have any idea. 回答1: You should use <FlatList .... onEndReached={this.endReached} onEndReachedThreshold={.7} .../> the onEndReached : Called once when the scroll position gets within onEndReachedThreshold of the rendered content. and onEndReachedThreshold : How far from the end (in units of visible length of the list) the bottom

问题 What is the best possible way to apply lazy load in Flatlist in react native. Currently there is infinite scroll in the flatlist. I am new to React native so i dont have any idea. 回答1: You should use <FlatList .... onEndReached={this.endReached} onEndReachedThreshold={.7} .../> the onEndReached : Called once when the scroll position gets within onEndReachedThreshold of the rendered content. and onEndReachedThreshold : How far from the end (in units of visible length of the list) the bottom

问题 I am trying to figure out how can i manage/display this component when data is still loading. I am using react redux for this case. any suggestion for solving this out? Although I wrapped this with lazy loading but it seems it is not that much working in this case. Any suggestion for this. //Actions.js export const getContact= () => dispatch => { dispatch(setResumesLoading()); axios .get('/api/contacts') .then(res => dispatch({ type: GET_CONTACTS, payload: res.data }) ).catch (err => dispatch

问题 We're using Asp.Net WebAPI with Entity Framework (with lazy loading) and using Json.net for serializing the data to json before returning the data to the client. We are experiencing intermittent sudden spikes in memory usage which we suspect might originate with json.net not recognizing reference loops when serializing data (since Entity Framework might be doing some lazy loading voodoo with proxy classes which goes under the radar of json.net) I thought I'd limit how deep Json.net was

问题 We're using Asp.Net WebAPI with Entity Framework (with lazy loading) and using Json.net for serializing the data to json before returning the data to the client. We are experiencing intermittent sudden spikes in memory usage which we suspect might originate with json.net not recognizing reference loops when serializing data (since Entity Framework might be doing some lazy loading voodoo with proxy classes which goes under the radar of json.net) I thought I'd limit how deep Json.net was

问题 Browsers started recently supporting native lazy loading via the loading attribute. However, many image heavy sites like unsplash.com and pexels.com don't use native lazy loading. Obviously, not all browsers support native lazy loading, but what are the risks of using loading="lazy" in addition to other options for lazy loading? That is, if you accept that unsupported browsers won't lazy load images, is there any downside to adding loading="lazy" to img tags? 来源： https://stackoverflow.com

问题 I'm very new to the IntersectionObserver API, and I've been experimenting with this code: let target = document.querySelector('.lazy-load'); let options = { root: null, rootMargin: '0px', threshold: 0 } let observer = new IntersectionObserver(callback, options); observer.observe(target); function callback() { console.log('observer triggered.'); } This seems to work as it should, and callback() is called whenever .lazy-load element enters the viewport, but callback() also fires once when the

问题 For several pages I use a .Count inside a foreach loop @model ICollection<Item> foreach(var item in Model) { @item.Flight.FlightReservations.count } Because of lazy loading the EF makes a round trip to the database for this. Now I want to fix this by using this or linq version: Include("List.Flight.FlightReservations") Doing this makes loading my dbSet take even longer than those foreach round trips How can I 'load' parts of only 1 object? I would like to use context.Items.Single(p => p.id ==