Lambda vs. an internal define or letrec is pretty much up to taste. Lambda vs. a globally defined procedure comes down to not needing to pass in a bunch of parameters from the calling code. It's also ...

A lot of programming languages these days feature lambda functions, or what I would be just as happy to call anonymous functions. Some people make a big deal out of these but the core idea is very ...

Before Java SE 8, anonymous classes were typically used to pass functionality to a method. This practice obfuscated source code, making it harder to understand. Java 8 eliminated this problem by ...