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Jetpack Compose is an open-source Kotlin-based declarative UI framework for Android developed by Google. [1] The first preview was announced in May 2019, [ 2 ] and the framework was made ready for production in July 2021.
The name is derived from Kotlin Island, a Russian island in the Gulf of Finland, near St. Petersburg. Andrey Breslav, Kotlin's former lead designer, mentioned that the team decided to name it after an island, just like the programming language Java was named after the Indonesian island of Java [10] (though the language's name is said to have been inspired by the Java variety of coffee, [11 ...
There are methods that a subclass cannot override. For example, in Java, a method that is declared final in the super class cannot be overridden. Methods that are declared private or static cannot be overridden either because they are implicitly final. It is also impossible for a class that is declared final to become a super class. [9]
Folds can be regarded as consistently replacing the structural components of a data structure with functions and values. Lists, for example, are built up in many functional languages from two primitives: any list is either an empty list, commonly called nil ([]), or is constructed by prefixing an element in front of another list, creating what is called a cons node ( Cons(X1,Cons(X2,Cons ...
"Don't repeat yourself" (DRY), also known as "duplication is evil", is a principle of software development aimed at reducing repetition of information which is likely to change, replacing it with abstractions that are less likely to change, or using data normalization which avoids redundancy in the first place.
The following is an example of a simple Hello World program. It is standard practice in ArkUI with ArkTS programming language to separate the application struct and views into different structs, with the main view named Index. [16]
Perl::Critic – A tool to help enforce common Perl best practices. Most best practices are based on Damian Conway's Perl Best Practices book. PerlTidy – Program that acts as a syntax checker and tester/enforcer for coding practices in Perl. Padre – An IDE for Perl that also provides static code analysis to check for common beginner errors.
Singleton at Microsoft patterns & practices Developer Center; IBM article "Double-checked locking and the Singleton pattern" by Peter Haggar; Geary, David (April 25, 2003). "How to navigate the deceptively simple Singleton pattern". Java Design Patterns. JavaWorld; Google Singleton Detector (analyzes Java bytecode to detect singletons)
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