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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. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    In Python, functions are first-class objects that can be created and passed around dynamically. Python's limited support for anonymous functions is the lambda construct. An example is the anonymous function which squares its input, called with the argument of 5:

  4. Lambda calculus - Wikipedia

    en.wikipedia.org/wiki/Lambda_calculus

    The examples 1 and 2 denote different terms, differing only in where the parentheses are placed. They have different meanings: example 1 is a function definition, while example 2 is a function application. The lambda variable x is a placeholder in both examples. Here, example 1 defines a function .

  5. Anonymous recursion - Wikipedia

    en.wikipedia.org/wiki/Anonymous_recursion

    This creates a higher-order function, and passing this higher function itself allows anonymous recursion within the actual recursive function. This can be done purely anonymously by applying a fixed-point combinator to this higher order function. This is mainly of academic interest, particularly to show that the lambda calculus has recursion ...

  6. Closure (computer programming) - Wikipedia

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

    The term closure is often used as a synonym for anonymous function, though strictly, an anonymous function is a function literal without a name, while a closure is an instance of a function, a value, whose non-local variables have been bound either to values or to storage locations (depending on the language; see the lexical environment section below).

  7. Functional programming - Wikipedia

    en.wikipedia.org/wiki/Functional_programming

    Lisp functions were defined using Church's lambda notation, extended with a label construct to allow recursive functions. [41] Lisp first introduced many paradigmatic features of functional programming, though early Lisps were multi-paradigm languages , and incorporated support for numerous programming styles as new paradigms evolved.

  8. Small business owners brace for Trump's proposed tariffs - AOL

    www.aol.com/small-business-owners-brace-trumps...

    But she realized the tariffs will have a ripple effect. For example, she had planned on sourcing bags from China to save 5 cents a bag. But with the tariffs, she might need to scuttle that plan.

  9. Fixed-point combinator - Wikipedia

    en.wikipedia.org/wiki/Fixed-point_combinator

    An example of such a function is the function that returns 0 for all even integers, and 1 for all odd integers. In lambda calculus , from a computational point of view, applying a fixed-point combinator to an identity function or an idempotent function typically results in non-terminating computation.