Functional Programming Library for C++

Modern functional programming languages, such as Haskell, Scala, ML, and F#, have properties that make it possible to implement logically complicated algorithms relatively easily. Among such properties is the composition of functions, currying, metafunctions (functions over functions), and some others. This makes it possible to obtain complex functions by combining simpler functions. An example of a complicated algorithm is a parser. In Haskell, there is a library called Parsec, which is a set of elementary parsers; by combining these parsers, one can create more complicated parsers. This fact makes the library relatively simple, yet powerful. The majority of these tools are not explicitly included in C++. However, C++ is sufficiently powerful for implementing many properties of functional programming languages. In this paper, an attempt is made to develop such a library.