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  2. Anonymous function - Wikipedia

    en.wikipedia.org/wiki/Anonymous_function

    The names "lambda abstraction", "lambda function", and "lambda expression" refer to the notation of function abstraction in lambda calculus, where the usual function f (x) = M would be written (λx. M), and where M is an expression that uses x. Compare to the Python syntax of lambda x: M.

  3. Kotlin (programming language) - Wikipedia

    en.wikipedia.org/wiki/Kotlin_(programming_language)

    When Kotlin was announced as an official Android development language at Google I/O in May 2017, it became the third language fully supported for Android, after Java and C++. [47] As of 2020 [update] , Kotlin is the most widely used language on Android, with Google estimating that 70% of the top 1,000 apps on the Play Store are written in Kotlin.

  4. Callback (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Callback_(computer...

    Notably, the delivery need not be made by the clerk who took the order. A callback need not be called by the function that accepted the callback as a parameter. Also, the delivery need not be made directly to the customer. A callback need not be to the calling function. In fact, a function would generally not pass itself as a callback.

  5. Lambda expression - Wikipedia

    en.wikipedia.org/wiki/Lambda_expression

    Lambda expression may refer to: Lambda expression in computer programming, also called an anonymous function , is a defined function not bound to an identifier. Lambda expression in lambda calculus , a formal system in mathematical logic and computer science for expressing computation by way of variable binding and substitution.

  6. Lambda function - Wikipedia

    en.wikipedia.org/wiki/Lambda_function

    Dirichlet lambda function, λ(s) = (1 – 2 −s)ζ(s) where ζ is the Riemann zeta function; Liouville function, λ(n) = (–1) Ω(n) Von Mangoldt function, Λ(n) = log p if n is a positive power of the prime p; Modular lambda function, λ(τ), a highly symmetric holomorphic function on the complex upper half-plane

  7. Android software development - Wikipedia

    en.wikipedia.org/wiki/Android_software_development

    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 ...

  8. Lambda lifting - Wikipedia

    en.wikipedia.org/wiki/Lambda_lifting

    In the untyped lambda calculus, where the basic types are functions, lifting may change the result of beta reduction of a lambda expression. The resulting functions will have the same meaning, in a mathematical sense, but are not regarded as the same function in the untyped lambda calculus. See also intensional versus extensional equality.

  9. Typed lambda calculus - Wikipedia

    en.wikipedia.org/wiki/Typed_lambda_calculus

    A typed lambda calculus is a typed formalism that uses the lambda symbol to denote anonymous function abstraction.In this context, types are usually objects of a syntactic nature that are assigned to lambda terms; the exact nature of a type depends on the calculus considered (see kinds below).