Scalaforum

Xml och XPath i Scala

2010-02-12T16:41:00+01:00

Kodexemplet visar bl.a. hur man kan "ut�ka" (med implicit conversion) klassen 'scala.xml.Elem' med en metod som tar emot en XPath-fr�ga som parameter, och returnerar en 'org.w3c.dom.NodeList'.

Using Scala functions to reduce duplication, as alternative to Strategy and Template method design patterns

2010-02-12T14:21:00+01:00

This page has been updated. Essentially, most of the changes are the added final words at the bottom of the page, but there are also some additions in the beginning of the page (i.e. before any larger pieces of code is displayed).

Ny FAQ-fr�ga om utvecklingsmilj�er f�r Scala

2010-01-17T15:30:00+01:00

Sidan 'Scala f�r Java-utvecklare' har omstrukturerats

2010-01-25T15:52:00+01:00

Sidan 'Scala f�r Java-utvecklare' har nu blivit uppsplittad med l�nkar till andra sidor i st�llet f�r att vara en enda l�ng sida...

Ny sida om Scala utbildningar och events (med eget feed, dvs uppdateringar ang�ende utbildningar/events dupliceras inte till denna feed ocks�)

2010-01-29T16:16:00+01:00

Scala query expressions can be used for queries similar to some C# LINQ expressions

2010-01-20T02:30:00+01:00

Your Scala code can extend existing classes with implicit conversions

2010-01-20T02:30:00+01:00

Scala can mix in reusable code into different classes while Java can only inherit from one class

2010-01-20T02:30:00+01:00

Scala code is less redundant than Java code

2010-01-20T02:30:00+01:00

Scala does not implement the concept of checked exceptions

2010-01-20T02:30:00+01:00

Nu finns det en ny sida 'Scala f�r Java-utvecklare', som syftar till att inneh�lla enkla kodexempel som kan visa vanliga Java-utvecklare (utan Scala-kunskaper) hur man ofta kan l�sa problem (t.ex. refaktoriserad �teranv�ndning av kod med mindre duplicering, utan omst�ndligt kodande som ofta kan kr�vas d� man anv�nder Java) p� ett b�ttre s�tt �n med Java.

Scala - Java - interoperability example using the Spring framework's JdbcTemplate

2010-01-20T02:30:00+01:00

Using Scala functions to reduce duplication, as alternative to Strategy and Template method design patterns

2010-01-19T20:04:00+01:00

Ny sida 'Scala f�r Java-utvecklare'

2010-01-19T20:08:00+01:00

FAQ-sida skapad

2010-01-17T15:30:00+01:00

Nu finns det en 'FAQ om Scala'.

Scala can implement a Java interface for an object without creating a class that implements the interface

2010-01-17T12:07:00+01:00

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The purpose of this article is to mainly illustrate these two things: (1) That Scala can be gradually introduced into your project/organization because of the nice interopability with Java (in this code below, there is very little Scala code, but only some Scala implementations of a Java interface) (2) That you can implement an interface for a specific instance, without having to create a class that implements the interface

The initial scenario is that we have some duplicated code which you want to refactor away, but with Java you will need to write a bit more code that you would like to, while the Scala solution is a bit shorter. In the class below, there are two methods that contain exactly the same implementation, but they have different parameters. One of the method receives an instance of the class RandomAccessFile, while the other receives an instance of BufferedReader. It is very important to note that these two classes do NOT ( ! ) share a common base type (except Object) that contains the only used method 'readLine', because if there were such a bae type, then we would be done by simply removing one of the methods, and change the formal parameter type to that common base type with the mehod 'readLine'.