Oct 28, 2010 welcome to the first part of a series of episodes about functional scala. Typeclasses for general behaviours over various data types. It is also the most prominent method of the new and exciting methodology known as objectfunctional programming. This book book aims at providing a lucid, applicationoriented presentation of scala s pure objectoriented in the sense thata. While positioning itself as a so called objectfunctional language, most of the discussion and articles about scala centered around its object oriented features so far.
Steps in scala an introduction to objectfunctional programming. A handson introduction to scala, the first fullyfledged programming language to embody the principles and ideas of object functional programming. For me, practical design in scala i wont say functional, because to me scala design is an object functional hybrid is based on a few pillars. Scala is a modern multiparadigm programming language designed to express common programming.
The ambitious goal of this chapter is to teach you how to build gui applications in scala. In this book we show how scala proves to be a highly expressive, concise. Unifying functional and objectoriented programming with scala. Scala is a modern multi paradigm programming language designed to express common programming.
Steps in scala an introduction to object functional. Examples are val x foo for an immutable constant or immutable object or var x. The previous examples gave an impression of what can be done with scala. Programming inscala artima martin odersky lex spoon bill venners a comprehensive step by step guide. An introduction to objectfunctional programming loverdos, christos k. Scala is a programming language where the fusion of the object oriented and functional approach was the guiding principle. The preceding discussion gave a flavor of distributed programming in scala. Scala the simple parts before discussing library modules, lets start with the simple parts in the language itself. Scala is a highly expressive, concise and scalable language. The following two examples written in javascript achieve the same effect they multiply all even numbers in an. The essence of objectfunctional programming and the.
A handson introduction to scala, the first fullyfledged programming language to embody the principles and ideas of objectfunctional programming. The second ingredient for scalas impressive adoption history is that it rides, and to a certain degree drives, the emerging trend of combining functional and objectoriented programming. Jan 22, 2008 the java platform has historically been the province of object oriented programming, but even java language stalwarts are starting to pay attention to the latest oldisnew trend in application development. Scala is a scalable objectfunctional programming language. Scala is a generalpurpose programming language providing support for functional. Many objectoriented design patterns are expressible in functional programming terms. Steps in scala an introduction to objectfunctional programming objectfunctional programming is already here.
Functional programming has emerged since the mid2000s as an attractive basis for software construction. Highly expressive, concise and scalable, scala grows to the needs of a programmer, whether professional or hobbyist. Accordingly well, the language is suited for object functional programming. It is aimed at the construction of components and component. The second ingredient for scala s impressive adoption history is that it rides, and to a certain degree drives, the emerging trend of combining functional and object oriented programming. In this new series, ted neward introduces scala, a programming language that combines functional and objectoriented techniques for the jvm. This is just a brief tour, not a full language tutorial. Scala is a scalable object functional programming language. Scala fuses objectoriented and functional programming in a statically typed programming language. Like java, scala is objectoriented, and uses a curlybrace syntax reminiscent of. P capital iq pretty much the entire time they were writing the book. May 25, 2014 scala the simple parts before discussing library modules, lets start with the simple parts in the language itself. It was believed that functional languages were slower than their imperative cousins, but this was mostly taken on faith and nobody really went out of their way to prove it.
Our solution is what is referred to as an internal dsl, internal to embedded. But this book describes all main topics interaction with jvm, concurrent programming, pattern matching, etc. Case class methods for data transformations attached directly to the data. For me, practical design in scala i wont say functional, because to me scala design is an objectfunctional hybrid is based on a few pillars.
It seamlessly integrates features of objectoriented and functional languages. Functional programming scala book scala documentation. A basic knowledge of objectoriented programming, especially in java. Therefore, any serious modern programming language should provide tools for gui programming. In computer science, functional programming is a programming paradigma style of building. They correspond directly to the fundamental actions that together cover the essence of programming in scala compose match group recurse abstract aggregate mutate as always. Steps in scala an introduction to objectfunctional. Welcome to the first part of a series of episodes about functional scala.
This document gives a quick introduction to the scala language and compiler. For the time being, functional programming was delegated to being a hobby, and also a handy way to find cute new material for the occasional dissertation or thesis. Scala is the most prominent representative of this exciting approach to programming,both in the small and in the. In this book, the authors show how scala grows to the needs of the programmer, whether professional or hobbyist.
This lesson begins a second on an introduction to functional programming in scala. Everyday low prices and free delivery on eligible orders. An introduction to objectfunctional programming by loverdos, christos k. How scala works scala is a scalable objectfunctional. In the following program, the timer function is called oncepersecond, and it gets a. The workshop discusses the java memory model, the issues of visibilty and reordering, the use of volatile and atomic variable, the implementation of immutable types based on the memory models initialization safety garantee, and provides an introduction to the techniques of lockfree programming. Steps in scala an introduction to objectfunctional programming, christos k. The code below shows how to use the map method to append the string donut to each donut element in the sequence. While positioning itself as a so called object functional language, most of the discussion and articles about scala centered around its object oriented features so far. An introduction to objectfunctional programming at. The book includes carefully chosen exercises and three full programming projects. An introduction to objectfunctional programming scala is a highly expressive, concise and scalable language. In this new series, ted neward introduces scala, a programming language that combines functional and object oriented techniques for the jvm.
Objectfunctional programming is a programming philosophy that is continuously gaining momentum since the introduction of scala. A scala tutorial for java programmers scala documentation. Tackle multicore complexity on the java virtual machine pragmatic programmers, 2009th is a short comparing to other books introduction to programming in scala. Scala lets you write code in an objectoriented programming oop style.