COMPILER DESIGN

Detailed explanation-1: -A higher-order function is a function that takes one or more functions as arguments and/or returns a function as its result. Three incredibly useful higher-order functions are map, filter, and reduce (fold). These functions allow large volumes of data to be operated on, filtered, and reduced to a single value.

Detailed explanation-2: -Higher order functions are functions that operate on other functions, either by taking them as arguments or by returning them. In simple words, A Higher-Order function is a function that receives a function as an argument or returns the function as output.

Detailed explanation-3: -A higher order function is a function that takes a function as an argument, or returns a function . Higher order function is in contrast to first order functions, which don’t take a function as an argument or return a function as output.

Detailed explanation-4: -Higher-order programming is a style of computer programming that uses software components, like functions, modules or objects, as values. It is usually instantiated with, or borrowed from, models of computation such as lambda calculus which make heavy use of higher-order functions.