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.)
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What is a Lazy object C#?
Lazy initialization is a technique that defers the creation of an object until the first time it is needed. In other words, initialization of the object happens only on demand. Note that the terms lazy initialization and lazy instantiation mean the same thing—they can be used interchangeably.
What is a Lazy method?
In computer programming, lazy initialization is the tactic of delaying the creation of an object, the calculation of a value, or some other expensive process until the first time it is needed. It is a kind of lazy evaluation that refers specifically to the instantiation of objects or other resources.
What is a Lazy value?
A lazy val is most easily understood as a “memoized (no-arg) def“. Like a def, a lazy val is not evaluated until it is invoked. But the result is saved so that subsequent invocations return the saved value. The memoized result takes up space in your data structure, like a val.
What is Lazy in Java?
Lazy class loading is an important feature of the Java runtime environment as it can reduce memory usage under certain circumstances. For example, if a part of a program never is executed during a session, classes referenced only in that part of the program never will be loaded.
What is a Lazy class?
The idea of Lazy class is simple – initialize class with action that builds or gets lazy loaded value and when value is asked then run the action if lazy loading is not happened yet.
What is Lazy type?
Lazy
What are lazy properties?
A lazy stored property is a property whose initial value isn’t calculated until the first time it’s used. You indicate a lazy stored property by writing the lazy modifier before its declaration.
What are lazy variables?
A lazy var is a property whose initial value is not calculated until the first time it’s called. It’s part of a family of properties in which we have constant properties, computed properties, and mutable properties.
What is lazy attribute?
A lazy attribute for an object is like a usual attribute, except that, instead of being computed when the object is constructed (i.e. in __init__ ), it is computed on the fly the first time it is accessed.
What is lazy code?
To avoid redundant calculations, reduce code size, or save resources, code mobility optimizations move computations across a control-flow graph (CFG).
What is a lazy language?
Haskell is a lazy language. This means that the evaluation of expressions is delayed until their values are actually needed. The opposite is eager evaluation, which is what most programming languages implement, like C, Java, and Python.
What is lazy construction?
Lazy object construction
A set of lazy constructor template classes and functions provide a way of lazily constructing an object of a type from an arbitrary set of lazy arguments in the form of lambda expressions.
What is the purpose of lazy loading?
Lazy loading, also known as dynamic function loading , is a mode that allows a developer to specify what components of a program should not be loaded into storage by default when a program is started.
Why is lazy loading?
The benefits of lazy loading include: Reduces initial load time – Lazy loading a webpage reduces page weight, allowing for a quicker page load time. Bandwidth conservation – Lazy loading conserves bandwidth by delivering content to users only if it’s requested.
What is lazy load images?
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.
What is primitive obsession?
Primitive Obsession is a code smell in which primitive data types are used excessively to represent your data models. Primitives are the basic data types available in most languages. For example, a string could represent a name, an address, or even an ID. The problem with primitives is they are very general.
What are examples of code smell?
Typical examples of code smells include the following:
- duplicate code.
- dead code.
- long methods.
- long parameter list.
- comments.
- unnecessary primitive variables.
- data clumps.
What is Lazy class code smell?
Lazy Class smells represent classes that are under-used. If a class is rarely used, it can impede development by increasing the complexity of the codebase. Such a class might be unnecessary, and it’s functionality could be made a part of another class. Lazy Class is the opposite code smell to Large Class.
What is a Lazy array?
A Lazy array is an array that is stored in memory as an expression or function (same difference, only the type is different). It might be helpful to get an example to visualize what exactly that means. Consider the following array: x = [5, 10, 15, 20]
What is lazy load in react?
In essence, lazy loading means that a component or a part of code must get loaded when it is required. It is also referred to as code splitting and data fetching . Talking about React specifically, it bundles the complete code and deploys all of it at the same time.