What’s Jetpack Compose and its Benefits? Jetpack Compose is a modern UI toolkit recently launched by Google which is used for building native Android UI. It simplifies and accelerates the UI development with less code, Kotlin APIs, and powerful tools. Declarative Compatible Increase development speed Concise and Idiomatic Kotlin Easy to maintain Written in Kotlin To read more, refer to the article: Jetpack Compose in Android Aaaaaa
Class and Object : constructor, local and instance variable, What do you mean by Constructor? Ans: The points given below explain what a Constructor is in detail: When a new object is created in a program a constructor gets invoked corresponding to the class. The constructor is a method which has the same name as class name. If a user doesn’t create a constructor implicitly a default constructor will be created. The constructor can be overloaded. If the user created a constructor with a parameter then he should create another constructor explicitly without a parameter. What is meant by Local variable and Instance variable? Ans: Local variables are defined in the method and scope of the variables that have existed inside the method itself. An instance variable is defined inside the class and outside the method and scope of the variables exist throughout the class. What is a Class? Ans: All Java codes are defined in a class. A Class has vari...
What is inline class in Kotlin and when do we need one? Provide an example. What is inline class in Kotlin and when do we need one? Provide an example. Senior Answer Sometimes it is necessary for business logic to create a wrapper around some type. However, it introduces runtime overhead due to additional heap allocations. Moreover, if the wrapped type is primitive, the performance hit is terrible, because primitive types are usually heavily optimized by the runtime. Inline classes provide us with a way to wrap a type, thus adding functionality and creating a new type by itself. As opposed to regular (non-inlined) wrappers, they will benefit from improved performance. This happens because the data is inlined into its usages, and object instantiation is skipped in the resulting compiled code. inline class Name ( val s : String ) { val length : Int get ( ) = s . length fun greet ( ) { println ( "Hello, $s " ) } } fun ma...
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