By John Hunt
Scala is a brand new programming language built via Martin Odersky and his group 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 supposing a few familiarity with general computing strategies is thought (such because the thought of compiling a application and executing this compiled shape, etc.) and with simple procedural language recommendations (such as variables and allocation of values to variables) the early chapters of the e-book don't think any familiarity with item orientation nor sensible programming. those chapters additionally step via different innovations with which the reader will not be typical (such as checklist processing). From this historical past, John Hunt presents a realistic advent to item and practical expertise utilizing Scala, one of many most recent and finest programming languages to be had. quite a few recommendations are brought via useful event 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 enthusiastic about the software program will locate this complete creation 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
These operations might be to test whether the date represents a date at a weekend or part of the working week. It may be to change the date (in which case the procedure may also check to see that the date is a valid one. For example: • isDayOfWeek(date); • inMonth(date, 2); • nextDay(date); • setDay(date, 9, 23, 1946); How do we know that these procedures are related to the date structure we have just looked at? By the naming conventions of the procedures and by the fact that one of the parameters is a data (record).
1 Introduction In the last chapter, you learned a little about the history of Scala and the Scala development environment. In this chapter, you encounter a little of the Scala language, what happens when you compile and run a Scala program, the Scala Runtime (Virtual Machine) and the Scala IDE. 2 The Scala Environment There are a number of things that you need in order to develop using the Scala language. First of all you need access to the Scala compiler. The compiler is called scalac and you may use it from the command line to compile Scala code files directly or you may use it via an IDE (such as the Scala IDE) that can compile your code for you automatically.
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. We can combine the Vanilla Ice Cream with the mint chips to create Vanilla Mint Chip Ice Cream.