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

By John Hunt

Scala is a brand new programming language built by means of Martin Odersky and his crew on the EPFL. The identify Scala is derived from Sca(lable) La(nguage). Scala is a multi-paradigm language, incorporating item orientated methods with practical programming. even if a few familiarity with common computing innovations is thought (such because the concept of compiling a software and executing this compiled shape, etc.) and with simple procedural language ideas (such as variables and allocation of values to variables) the early chapters of the booklet don't suppose any familiarity with item orientation nor sensible programming. those chapters additionally step via different innovations with which the reader is probably not standard (such as checklist processing). From this history, John Hunt presents a pragmatic creation to item and sensible know-how utilizing Scala, one of many most recent and finest programming languages to be had. numerous recommendations are brought via useful adventure taking the reader past the extent of the language syntax to the philosophy and perform of object-oriented improvement and useful programming. scholars, and people actively eager about the software program will locate this complete advent to Scala and to item orientation and useful programming, invaluable.

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

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It can however, be combined with classes to create new types of classes and objects. As such a Trait can contain data, behaviour, functions, type declarations, abstract members etc. but cannot be instantiated itself. The analogy might be that a class is like a flavour of Ice Cream. You can have vanilla as the basic flavour with all the characteristics of ice cream, Chocolate could be a subclass of Vanilla which extends the concept to a chocolate flavour of ice cream. Separately we could have bowls containing chocolate chips, mint chips, M&Ms, sprinkles of various types.

3 Scala Download Site Fig. 4 The Scala IDE 47 Fig. 5 The Scala IDE Fig. 5). This editor is made up of views onto the project or projects you are working with. The current display shows the package Explorer on the left, Outline on the right, an area below the middle showing any problems, tasks to be completed and the output console. The currently blank central area is where you code will be displayed. 3 Creating a Project The first thing we need is a Scala Project. A Project in Eclipse has a number of types of project such as Scala, XML, Java, etc.

We might say that the position of the switch or the status of the pump is significant. 1. The identification of the data items is considered in greater detail in Part 7. At this point, merely notice that we have not yet mentioned the functionality of the system or how it might fit together, we have only mentioned the significant items. g. g. the condition of the fuse) is an instance variable of the object. This is a very common way of naming objects and their instance variables. We now have the basic objects required for our application.

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