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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.
In Kotlin, to derive a new class from a base class type, the base class needs to be explicitly marked as "open". This is in contrast to most object-oriented languages such as Java where classes are open by default. Example of a base class that is open to deriving a new subclass from it:
Google states that [3] "Android apps can be written using Kotlin, Java, and C++ languages" using the Android software development kit (SDK), while using other languages is also possible. All non- Java virtual machine (JVM) languages, such as Go , JavaScript , C , C++ or assembly , need the help of JVM language code, that may be supplied by ...
Basically, object code for the language's interpreter needs to be linked into the executable. Source code fragments for the embedded language can then be passed to an evaluation function as strings. Application control languages can be implemented this way, if the source code is input by the user. Languages with small interpreters are preferred.
Android Studio supports all the same programming languages of IntelliJ (and CLion) e.g. Java, C++, and more with extensions, such as Go; [19] and Android Studio 3.0 or later supports Kotlin, [20] and "Android Studio includes support for using a number of Java 11+ APIs without requiring a minimum API level for your app". [21]
Smalltalk-80 added metaclasses, to help maintain the "everything is an object" (except variables) paradigm by associating properties and behavior with individual classes, and even primitives such as integer and Boolean values (for example, to support different ways to create instances).
A comprehensive list of discriminatory acts against American Muslims might be impossible, but The Huffington Post wants to document this deplorable wave of hate using news reports and firsthand accounts.
A PDF creator and virtual PDF printer for Microsoft Windows PDF-XChange: Proprietary: Yes: PDF Tools allows creation of PDFs from many types of source input (images, scans, etc.). The PDF-XChange print driver allows printing directly to a PDF. A "lite" version of the print driver is free for non-commercial (home and academic) use. PrimoPDF ...