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New PDF release: A Beginner's Guide to Scala, Object Orientation and

By John Hunt

ISBN-10: 3319067753

ISBN-13: 9783319067759

Scala is a brand new programming language constructed through Martin Odersky and his workforce on the EPFL. The identify Scala is derived from Sca(lable) La(nguage). Scala is a multi-paradigm language, incorporating item orientated ways with useful programming. even though a few familiarity with usual computing techniques is believed (such because the thought of compiling a software and executing this compiled shape, etc.) and with uncomplicated procedural language thoughts (such as variables and allocation of values to variables) the early chapters of the e-book don't suppose any familiarity with item orientation nor sensible programming. those chapters additionally step via different strategies with which the reader will not be time-honored (such as record processing). From this historical past, John Hunt offers a pragmatic creation to item and practical expertise utilizing Scala, one of many most modern and finest programming languages on hand. quite a few ideas are brought via sensible adventure taking the reader past the extent of the language syntax to the philosophy and perform of object-oriented improvement and practical programming. scholars, and people actively inquisitive about the software program will locate this accomplished advent to Scala and to item orientation and useful programming, precious.

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Extra info for A Beginner's Guide to Scala, Object Orientation and Functional Programming

Sample text

Most of this Java class is boilerplate code. In fact it is so common that tools such as Eclipse allow us to create the boilerplate code automatically. Which may mean that we do not have to type much more in the Java case than the Scala case. However, when I look back and have to read this code I may have to wade through a lot of such boilerplate code in order to find the actual functionality of interest. In the Scala case this boilerplate code is handled by the language meaning that I can focus on what the class actually does.

Functional Programming promotes immutable data. Functional Programming also tends to avoid concepts such as mutable data. Mutable data is data that can change its state. By contrast Immutability indicates that once created, data cannot be changed. In Scala Strings are immutable. Once you create a new string you cannot modify it. Any functions that apply to a string that would conceptually alter the contents of the string, result in a new String being generated. Scala takes this further by having a presumption of Immutability that means that by default all data holding types are immutable.

This method could be defined in the class Birthday (in which it would override that defined in the class Date). However, it could be define in the class Date (if no such method is defined in Birthday). However, without looking at the source code there is no way of knowing! Of course you can also use the new methods defined in the class Birthday on instance (objects) of this class. 4 Summary Classes in an object-oriented language provide a number of features that are not present in procedural languages.

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A Beginner's Guide to Scala, Object Orientation and Functional Programming by John Hunt


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