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 ways with practical programming. even if a few familiarity with common computing ideas is believed (such because the notion of compiling a software and executing this compiled shape, etc.) and with simple procedural language techniques (such as variables and allocation of values to variables) the early chapters of the ebook don't imagine any familiarity with item orientation nor sensible programming. those chapters additionally step via different options with which the reader is probably not wide-spread (such as record processing).
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Extra info for A Beginner's Guide to Scala, Object Orientation and Functional Programming
13. And now click ‘Finish’. 14). 4 Scala IDE and REPL The Scala interpreter is also available within the Scala IDE. However, in this case it also provides access to any Scala type you currently have within the current project. This means that you can type in expressiosn involving the types you are developing to test them out interactively. To do this open the Scala Interpreter by 50 Fig. 12 Scala New Object Wizard Fig. 13 Entering the Object name Fig. 5 Implementing the Object 51 Fig. 15 Selecting the Scala Interpreter view Fig.
However, in this case it also provides access to any Scala type you currently have within the current project. This means that you can type in expressiosn involving the types you are developing to test them out interactively. To do this open the Scala Interpreter by 50 Fig. 12 Scala New Object Wizard Fig. 13 Entering the Object name Fig. 5 Implementing the Object 51 Fig. 15 Selecting the Scala Interpreter view Fig. 15. 16. This interpreter is linked to the helloworld project and shows that you can type in an expression to the Evaluate box.
You have seen how the data to be represented determines the objects used and that the interactions between objects determine the structure of the system. You should also have noted that objects and their classes, methods and instance variables are identified by more of an evolutionary process than in languages that are not object oriented. 10 Exercises Take a system with which you are familiar and try to break it down into objects. Carry out a similar set of steps to those described above. Do not worry about how to implement the objects or the classes.