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  2. Java syntax - Wikipedia

    en.wikipedia.org/wiki/Java_syntax

    These features were introduced with the release of Java SE 8. An interface automatically becomes a functional interface if it defines only one method. In this case an implementation can be represented as a lambda expression instead of implementing it in a new class, thus greatly simplifying writing code in the functional style.

  3. Jakarta Expression Language - Wikipedia

    en.wikipedia.org/wiki/Jakarta_Expression_Language

    Java Expression Language (JEXL) is a library intended to facilitate the implementation of dynamic and scripting features in applications and frameworks written in Java. Latest release, Version: 3.2.1, 25 June 2021. JUEL is an open-source implementation of the Unified Expression Language (EL), specified as part of the JSP 2.1 standard (JSR-245).

  4. Functional programming - Wikipedia

    en.wikipedia.org/wiki/Functional_programming

    Java 8 supports lambda expressions as a replacement for some anonymous classes. [107] In C#, anonymous classes are not necessary, because closures and lambdas are fully supported. Libraries and language extensions for immutable data structures are being developed to aid programming in the functional style in C#.

  5. Closure (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Closure_(computer_programming)

    In this example, the lambda expression (lambda (book) (>= (book-sales book) threshold)) appears within the function best-selling-books. When the lambda expression is evaluated, Scheme creates a closure consisting of the code for the lambda expression and a reference to the threshold variable, which is a free variable inside the lambda expression.

  6. Anonymous function - Wikipedia

    en.wikipedia.org/wiki/Anonymous_function

    In computer programming, an anonymous function (function literal, expression or block) is a function definition that is not bound to an identifier.Anonymous functions are often arguments being passed to higher-order functions or used for constructing the result of a higher-order function that needs to return a function. [1]

  7. Lambda lifting - Wikipedia

    en.wikipedia.org/wiki/Lambda_lifting

    Lambda lifting is a meta-process that restructures a computer program so that functions are defined independently of each other in a global scope.An individual "lift" transforms a local function into a global function.

  8. Lazy evaluation - Wikipedia

    en.wikipedia.org/wiki/Lazy_evaluation

    Each iteration of the loop links a to a new object created by evaluating the lambda expression inside the loop. Each of these objects holds a reference to another lazy object, b, and has an eval method that calls b.eval() twice and returns the sum. The variable b is needed here to meet Java's requirement that variables referenced from within a ...

  9. Fluent interface - Wikipedia

    en.wikipedia.org/wiki/Fluent_interface

    The term "fluent interface" was coined in late 2005, though this overall style of interface dates to the invention of method cascading in Smalltalk in the 1970s, and numerous examples in the 1980s. A common example is the iostream library in C++ , which uses the << or >> operators for the message passing, sending multiple data to the same ...