A higher-order function is defined as one that can take functions as inputs, return functions as outputs, or do both. This concept was pioneered by Alonzo Church in the 1930s through his work on Lambda Calculus, fundamentally changing our perception of functions in programming. Languages such as Lisp and ML adopted these ideas, and Scala, developed by Martin Odersky in 2004, incorporated higher-order functions as a core feature, illustrating their importance in modern programming practices and functional programming paradigms.
A higher-order function is one that either takes other functions as parameters, returns a function as a result, or both.
Alonzo Church, in the 1930s, developed the concept of higher-order functions through Lambda Calculus, which revolutionized our understanding of functions.
Scala, introduced by Martin Odersky in 2004, fully embraced higher-order functions, making them a key feature of the language.
Lambda calculus defines functions in a concise, mathematical form, demonstrating the pure mathematical representation of functions.
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