|
Higher-order function - Wikipedia, the free encyclopedia
In mathematics and computer science, higher-order functions , functional forms , or functionals are functions which do at least one of the following: •take one or more functions as an input •out...
en.wikipedia.org/wiki/Higher-order_function |
|
Fold (higher-order function) - Wikipedia, the free encyclopedia
|
||
|
In the section on functions, we mentioned that function parameters are lexically scoped. It is also possible to use lexically-scoped variables directly. For example, in order to avoid interfering with a global instance of i, the following scoping syntax can be used:
|
||
|
Using functions for such higher order purposes as arguments, function-generating functions, and anonymous functions ... (define process-order ;;The function has one data record for the order and three functions as parameters (lambda (order ship-calc-func credit-validate-func charge-order-func) (let ( ;
|
||
|
In mathematics the counterpart to higher order functions are functionals (mapping functions to scalars) and function operators (mapping functions to functions). Typical functionals are the limit of a sequence, or the integral of an interval of a function.
|
||
|
book on higher-order functions and how they can be used as building blocks to create more elaborate abstractions such as object-oriented programming. The Seasoned Schemer devotes an entire book to the uses of functions.
|
||
|
14. Introduction to higher-order functions ... Higher-order functions is another key area in the functional programming paradigm; Perhaps the most important at all. In this chapter we will explore this exiting area, and we will give a number of web-related examples.
|
||
|
delegate void Action< -A > (A a); ... and then have ... Suppose you want to do "higher order" functional programming. For example, perhaps you want to define a meta-action – a delegate which takes actions and does something with them:
|
||
|
Higher-order functions are functions that take other functions as arguments. We have already met some of them, such as map, so there isn't anything really frightening or unfamiliar about them. They offer a form of abstraction that is unique to the functional programming style.
|
||
|
CiteSeerX - Document Details (Isaac Councill, Lee Giles): C and C++ allow passing functions as arguments to other functions in the form of function pointers. However, since function pointers can refer only to existing functions declared at global or file scope, these function arguments cannot capture local environments.
|