lazy-loading

问题 Scenario: I'd like to add an entity to the database that would have navigation properties and that entity has navigation properties.. and so on. Basically the tables in the database are connected with each other - all of them. I use EF4.3 and context/request pattern, so I don't want to enable Lazy loading; it would simply just take too much time to load the entity that I need. So far I have learned there is no other way to do it than to use the include method like this: context.Set<TEntity>()

问题 my Question is, how can i trigger (simulate or something esle) an on scroll event. In my special case I don't want to load all the Conservations in LinkedIn by scolling down all conservations, because there are too many! I do not need a PHP or Javascript solution. Simply using dev-tools at chrome is enough to get my goal. 回答1: Alternatively, you can manually trigger a real scroll event as following: el.dispatchEvent(new CustomEvent('scroll')) Which feels a bit less of a hack (and more

问题 Before marking as duplicate, please consider that I have already looked through many related stack overflow posts, as well as websites and articles. I have not found a solution yet. This question is a follow up to this question here Selenium Webdriver not finding XPATH despite seemingly identical strings. I determined the problem did not in fact come from the xpath method by updating the code to work in a more elegant manner: for item in feed: img_div = item.find_element_by_class_name(

问题 I have something like: @Entity @Table(name = "myEntity") public class MyEntity { //.... @Column(name = "content") private byte[] content; //.... } PROBLEM : I pass MyEntity to the client as JSON string. But the problem is that I have two types of client's requests: I need to pass MyEntity with byte[] content array I need to pass MyEntity without byte[] content array In first case I needn't @JsonIgnore annotation, in second - do need. QUESTIONS : How to achive dynamical @JsonIgnore annotation?

问题 I render image by props like this : function AdImg(props) { const propImg = `http://localhost:5000/${props.img}`; return ( <img placeholder={require('../../../app-data/img/default.png')} alt="ad-img" className="img-fluid rounded" src={propImg} /> ); } export default AdImg; The propblem is when this component renders it doesn't show the placeholder till it render the actual image . How can I set a default placeholder image so it shows the placeholder till it renders the actual image ? 回答1:

问题 I have written a RestController in my SpringBoot app. I am using a MongoDB as well. This is my entity: public class LocationEntity { @Id private String id; private String name; @DBRef(lazy = true) @JsonIgnore private UserEntity owner; private String description; @DBRef(lazy = true) private List<RoleEntity> roles; private Date date; public LocationEntity(String name, UserEntity owner, String description, List<RoleEntity> roles, Date date) { this.name = name; this.owner = owner; this

问题 Issue: I cannot natively lazy load an iframe on a modal window. When I check the waterfall in Inspect element > Network, the iframe loads immediately. Goal: The iframe should load ONLY when modal is triggered. Can you help please? I don't use dependencies like jQuery, but javascript is OK if it provides a solution. I tried the native and several other lazy loading solutions with no success. My code: .modal-state { display: none } .modal-state:checked+.modal { opacity: 1; visibility: visible }

问题 Issue: I cannot natively lazy load an iframe on a modal window. When I check the waterfall in Inspect element > Network, the iframe loads immediately. Goal: The iframe should load ONLY when modal is triggered. Can you help please? I don't use dependencies like jQuery, but javascript is OK if it provides a solution. I tried the native and several other lazy loading solutions with no success. My code: .modal-state { display: none } .modal-state:checked+.modal { opacity: 1; visibility: visible }

问题 I am trying to call a ASP.NET MVC Action Result concurrently 11 times which is throwing few errors. To address that found a solution for similar issue poster over here https://stackoverflow.com/a/38636016/942855 Followed same answer using https://github.com/StephenCleary/AsyncEx/wiki/AsyncLazy Here is my code private readonly ConcurrentDictionary<GcrModelFull, AsyncLazy<List<Airport>>> CachedProximityAirports; public Task<List<Airport>> GcrAsync(GcrModelFull model) { var lazy =

问题 I am trying to call a ASP.NET MVC Action Result concurrently 11 times which is throwing few errors. To address that found a solution for similar issue poster over here https://stackoverflow.com/a/38636016/942855 Followed same answer using https://github.com/StephenCleary/AsyncEx/wiki/AsyncLazy Here is my code private readonly ConcurrentDictionary<GcrModelFull, AsyncLazy<List<Airport>>> CachedProximityAirports; public Task<List<Airport>> GcrAsync(GcrModelFull model) { var lazy =