War heroes, like Paul Revere, are well known. However, there are also war heroes that a lot of people have never heard of. Unheralded as they maybe, they are worthy of commendation for very few people are willing to endure what these 25 war heroes you probably never heard of have endured. Subscribe to List25.
Lambda calculus. Lambda calculus (also written as Î»-calculus) is a formal system in mathematical logic for expressing computation based on function abstraction and application using variable binding and substitution.
In computer programming, an anonymous function (function literal, lambda abstraction, or lambda expression) 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.