It's a pretty rich GUI application and the source (as well as explanation) is all there. 33) in Odersky's Programming in Scala goes through the process of making a simple, but certainly non-trivial GUI spreadsheet program using Scala. By the way, if you are coming from Ruby, like me, this is the same idea as inject. README.md . ... For these things, we can use an Option type in Scala. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You can create any kind of application like web application, enterprise application, mobile application, desktop based application etc. Here the getName def returns an Option String. In other words, The scala comments are statements which are not executed by the compiler or interpreter. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. The scala package contains core types like Int, Float, Array or Option which are accessible in all Scala compilation units without explicit qualification or imports.. play-scala-websocket-example .gitignore .mergify.yml .travis.yml . With an Option, we express absence or "nothingness" with clarity. local-test.sh . If the argument we pass to it is at least 1, we get an Option containing the String "Oxford." For some reason I didn't use it very often in Ruby, but I use it all the time with Scala. License To the extent possible under law, the author(s) have dedicated all copyright and related and neighboring rights to this software to the public domain worldwide. Notable packages include: scala.collection and its sub-packages contain Scala's collections framework. As shown, with a match expression you write a number of case statements that you use to match possible values. In Scala, there are three types of comments: Single – line comments. The following examples show how to use scala.math.sqrt.These examples are extracted from open source projects. val numbers = List(5, 4, 8, 6, 2) numbers.fold(0) { (z, i) => a + i } // result = 25 Code Examples for Programming in Scala by Martin Odersky, Lex Spoon, Bill Venners. Scala Program Example. play-scala-tls-example . File extension of scala source file may be either .scala or .sc. Package structure . Let's see the simple program of scala. Annotations are allowed on any kind of definition or declaration including vars, vals, classes, objects, traits, defs and types. LICENSE . I will start with a very simple example; by summing a list of integers with fold. This can also be used to hide program code details. The chapter before it details GUI programming using scala.swing and is full of examples, but it doesn't have very many complete ones. View code README.md Play samples. Like comments, annotations can be attached to a variable, method, expression or any other program element. Spark Action Examples in Scala; With these three fundamental concepts and Spark API examples above, you are in a better position to move any one of the following sections on clustering, SQL, Streaming and/or machine learning (MLlib) organized below. Spark Clusters. Return Option example. Scala Annotations are metadata or extra information added to the program source code. This is the documentation for the Scala standard library. A detailed … The comments can be used to provide explanation or information about the variable, class, method, or any statement. NOTICE . The last chapter (Ch. The following examples show how to use org.mockito.ArgumentMatchers.any.These examples are extracted from open source projects. Be attached to a variable, method, expression or any other program.... Like web application, desktop based application etc by summing a list of integers with fold to it is least... Are extracted from open source projects either.scala or.sc standard library to match values! You use to match possible values file extension of Scala source file may be either.scala.sc... The time with Scala with a match expression you write a number of case statements that you use to possible... Scala source file may be either.scala or.sc – line comments application, mobile application desktop! Enterprise application, mobile application, enterprise application, enterprise application, application... Well as explanation ) is all there statements which are not executed by the or. I did n't use it all the time with Scala to the program source code standard... To provide explanation or information about the variable, method, or any other program element a expression. The following examples show how to use org.mockito.ArgumentMatchers.any.These examples are extracted from source! Sub-Packages contain Scala 's collections framework n't have very many complete ones simple example ; summing. Using scala.swing and is full of examples, but I use it all the time with Scala class,,! Examples are extracted from open source projects Scala source file may be either.scala or.sc... for these,... Or information about the variable, method, or any statement 's a pretty rich GUI application and source. How to use org.mockito.ArgumentMatchers.any.These examples are extracted from open source projects type in Scala … code examples for in. Possible values method, expression or any statement in other words, the Scala comments are statements which are executed! As shown, with a very simple example ; by summing a list of with! Me, this is the documentation for the Scala comments are statements which are not executed by the way if! From open source projects pretty rich GUI application and the source ( as well explanation! Of definition or declaration including vars, vals, classes, objects, traits defs... Scala standard library are statements which are not executed by the compiler or interpreter, method, or any program. For these things, we express absence or `` nothingness '' with clarity application like web application, mobile,... Which are not executed by the compiler or interpreter are extracted from source! Way, if you are coming from Ruby, but it does n't have very many complete.. Bill Venners Bill Venners it does n't have very many complete ones can. Can also be used to hide program code details defs and types Option type in Scala by Martin Odersky Lex! … code examples for Programming in Scala by Martin Odersky, Lex Spoon, Bill Venners you write a of! Pass to it is at least 1, we express absence or `` nothingness '' with clarity to. Spoon, Bill Venners or interpreter or.sc desktop based application etc there are three types of comments: –. Code examples for Programming in Scala by Martin Odersky, Lex Spoon, Bill Venners Scala source file be... We express absence or `` nothingness '' with clarity packages include: scala.collection and its contain. Compiler or interpreter chapter before it details GUI Programming using scala.swing and is full examples! Scala annotations are allowed on any kind of definition or declaration including vars vals! Program code details ) is all there a variable, method, or any statement the documentation for Scala! This can also be used to provide explanation or information about the variable, method, expression or statement... Application and the source ( as well as explanation ) is all there like comments, annotations be! A very simple example ; by summing a list of integers with fold if are.