What is lazy initialization and why is it useful?
Lazy initialization of an object means that its creation is deferred until it is first used. (For this topic, the terms lazy initialization and lazy instantiation are synonymous.) Lazy initialization is primarily used to improve performance, avoid wasteful computation, and reduce program memory requirements.
How does lazy loading work in Adobe Photoshop?
Lazy Loading defers the loading of an image that is not needed on the page immediately. An image, not visible to the user when the page loads, is loaded later when the user scrolls and the image actually becomes visible. If the user never scrolls, an image that is not visible to the user never gets loaded.
What do you mean by lazy loading images?
What is Image Lazy Loading? Lazy Loading Images is a set of techniques in web and application development that defer the loading of images on a page to a later point in time – when those images are actually needed, instead of loading them up front.
How to create a lazy initialized type in Visual Basic?
To define a lazy-initialized type, for example, MyType, use Lazy (Lazy (Of MyType) in Visual Basic), as shown in the following example. If no delegate is passed in the Lazy constructor, the wrapped type is created by using Activator.CreateInstance when the value property is first accessed.
When to use exception caching in lazy initialization?
If you enable exception caching, this immutability also extends to exception behavior. If a lazy-initialized object has exception caching enabled and throws an exception from its initialization method when the Value property is first accessed, that same exception is thrown on every subsequent attempt to access the Value property.
What does isthreadsafe do in lazy initialization?
Some Lazy constructors have a Boolean parameter named isThreadSafe that is used to specify whether the Value property will be accessed from multiple threads. If you intend to access the property from just one thread, pass in false to obtain a modest performance benefit.