'scala' tag wiki
Scala School
Other Languages: About Scala school started as a series of lectures at Twitter to prepare experienced engineers to be productive Scala programmers. Scala is a relatively new language, but draws on many familiar concepts. Approach We think it makes the most sense to approach teaching Scala not as if it were an improved Java but instead as a new language. Most of the lessons require no software other than a Scala REPL. Also You can learn more elsewhere:
Programming in Scala, First Edition
Programming in Scala, First Editionby Martin Odersky, Lex Spoon, and Bill VennersDecember 10, 2008 Martin Odersky made a huge impact on the Java world with his design of the Pizza language. Although Pizza itself never became popular, it demonstrated that object-oriented and functional language features, when combined with skill and taste, form a natural and powerful combination. Pizza's design became the basis for generics in Java, and Martin's GJ (Generic Java) compiler was Sun Microsystem's standard compiler starting in 1.3 (though with generics disabled). I had the pleasure of maintaining this compiler for a number of years, so I can report from first-hand experience that Martin's skill in language design extends to language implementation. Since that time, we at Sun tried to simplify program development by extending the language with piecemeal solutions to particular problems, like the for-each loop, enums, and autoboxing. Will Scala be the next great language? How to use this book
Scala in Depth
Scala in Depth is a unique new book designed to help you integrate Scala effectively into your development process. By presenting the emerging best practices and designs from the Scala community, it guides you through dozens of powerful techniques example by example. Scala is a powerful JVM language that blends the functional and OO programming models. You'll have no trouble getting introductions to Scala in books or online, but it's hard to find great examples and insights from experienced practitioners. There's little heavy-handed theory here—just dozens of crisp, practical techniques for coding in Scala. Concise, expressive, and readable code style Integrate Scala into your existing Java projects Scala's 2.8.0 collections API How to use actors for concurrent programming Mastering the Scala type system Scala's OO features—type member inheritance, multiple inheritance, and composition Functional concepts and patterns—immutability, applicative functors, and monads
The Python Tutorial — Python v2.7.4 documentation
Python is an easy to learn, powerful programming language. It has efficient high-level data structures and a simple but effective approach to object-oriented programming. Python’s elegant syntax and dynamic typing, together with its interpreted nature, make it an ideal language for scripting and rapid application development in many areas on most platforms. The Python interpreter and the extensive standard library are freely available in source or binary form for all major platforms from the Python Web site, and may be freely distributed. The Python interpreter is easily extended with new functions and data types implemented in C or C++ (or other languages callable from C). This tutorial introduces the reader informally to the basic concepts and features of the Python language and system. For a description of standard objects and modules, see The Python Standard Library. The Glossary is also worth going through.
Compile Scala to JavaScript With Scala.js
At the Scala Day last week, Sébastien Doeraene presented Scala.js, a Scala to JavaScript compiler. The compiler supports the full Scala language allowing its users to build web applications front to back in Scala and potentially reuse code between the server and the client. Scala code written for Scala.js can interact with existing JavaScript code either in a dynamically typed manner, or in a statically typed manner. The former is more flexible: access is provided to the global (window) object and arbitrary properties can be accessed and method called. However, this does not leverage the statically typed nature of Scala. Alternatively, typed signatures of JavaScript libraries can be provided. These types are used by the compiler to do type checking and to provide code completion in IDEs. .Here's an example of using jQuery from Scala.js, the example attaches an on-click handler to a button with id "button", and once clicked appends a paragraph tag to a div with id "pane":
Scala: the flying sandwich parts
JavaScript existed since 1995 long before 'JavaScript: The Good Parts' (2008), jQuery (2006), and V8 (2008) happened. The interesting thing about Douglas Crockford's 'The Good Parts' is that unlike the other additive work, it's a book about subtracting features from the language. I've been thinking about exploring a subset of Scala in a wonderland setting without the "real world" constraints such as Java familiarity and interoperability. If using Scala as an alternative Java is acceptable, why not try using it as an alternative functional programming language? Another point of this thought experiment is to see some of the duplicate constructs can be reduced. In this article, I'm not interested in finding out the idiomatic way, or calling something good or bad. values What talk you of the posy or the value? The Scala Language Specification describes a value as follows: A value definition val x: T = e defines x as a name of the value that results from the evaluation of e. lazy vals avoid vars
