FUNCTIONAL PROGRAMMING IN HASKELL

U ovom radu pod nazivom ”Funkcionalno programiranje u Haskellu” obradit će se funkcionalna programska paradigma kroz programski jezik Haskell. Funkcionalno programiranje obilježeno je konceptima kao što su čiste funkcije, referencijalna transparentnost, funkcije višeg reda, rekurzija, itd. Za razliku od imperativne programske paradigme u kojoj se računalu eksplicitno zadaje korakpo-korak što da napravi, funkcionalna programska paradigma se oslanja na to da se računalu kaže što je što a da se izračuni obavljaju kombiniranjem funkcija. Haskell je programski jezik koji u potpunosti implementira funkcionalnu programsku paradigmu. Ne miješa je s imperativnom ili nekom drugom paradigmom kao većina drugih programskih jezika koji implementiraju neke njene principe. Prva verzija Haskella izlazi u travnju 1990. godine. U trenutku pisanja ovog rada aktualna je verzija Haskell 2010. Motiv za kreiranje Haskella bio je konsolidirati razvojne napore koji su tada postojali u razvoju funkcionalnih programskih jezika jer je fragmentacija u tom polju bila velika. Na kraju rada će se prikazati primjer programa u Haskellu koji koristi paralelizam za obradu određenih podataka s obzirom da je to jedno od područja u kojemu neke od prednosti funkcionalnih programskih jezika mogu doći do izražaja.In this thesis headlined ”Functional programming in Haskell” we will elaborate functional programming paradigm through the programming language Haskell. Functional programming is permeated with concepts like pure functions, referential transparency, higher order functions, recursion, etc. In contrast to the imperative programming paradigm in which computer is explicitly given what to do step-by-step, the functional programming paradigm is based on a notion that the computer is told what represents what and that computations are made by combining functions. Haskell is programming language that fully obeys functional programming paradigm. Unlike most of the programming languages that implement some of its principles Haskell doesn’t mix it with imperative or any other programming paradigm. The first version of Haskell was defined in April of 1990. At the time of writing of this thesis the actual version is Haskell 2010. The motive for creating Haskell was to consolidate the development efforts that existed at time in the development of functional programming languages because fragmentation in that field was considerable. At the end of the thesis, there is an example of the program written in Haskell that is using parallelism for processing some data considering that is one of the areas where some of the advantages of functional programming languages can be shown