Learning Scala part three – Executing Scala code
Learning Scala part three – Executing Scala code With Scala installed and some tools to work with it it’s about time to look at how we can execute Scala code. This is the third post in the Learning Scala series after all. Sorry to keep you waiting for so long before showing some code. Anyhow, there are three ways to execute Scala code, interactively, as a script and as a compiled program. In this post we’ll take a quick look at each of them and print out the mandatory Hello world message. Using the interactive interpreter The easiest way to execute a single line of Scala code is to use the interactive interpreter with which statements and definitions are evaluated on the fly. We start the interactive interpreter using the Scala command line tool “scala” which is located in the bin folder in the folder where Scala is installed. With the proper environment variable in place you can just type “scala” to start it.
In fact the concept of static methods (or variables or classes) doesn’t exist in Scala. In Scala everything is an object. However Scala has an object construct with which we can declare singletons. In other word our main method is an instance method on a singleton object that is automatically instantiated for us.
def main(args: Array[String]) : Unit = //Body
Read full article from Learning Scala part three – Executing Scala code
Learning Scala part three – Executing Scala code With Scala installed and some tools to work with it it’s about time to look at how we can execute Scala code. This is the third post in the Learning Scala series after all. Sorry to keep you waiting for so long before showing some code. Anyhow, there are three ways to execute Scala code, interactively, as a script and as a compiled program. In this post we’ll take a quick look at each of them and print out the mandatory Hello world message. Using the interactive interpreter The easiest way to execute a single line of Scala code is to use the interactive interpreter with which statements and definitions are evaluated on the fly. We start the interactive interpreter using the Scala command line tool “scala” which is located in the bin folder in the folder where Scala is installed. With the proper environment variable in place you can just type “scala” to start it.
In fact the concept of static methods (or variables or classes) doesn’t exist in Scala. In Scala everything is an object. However Scala has an object construct with which we can declare singletons. In other word our main method is an instance method on a singleton object that is automatically instantiated for us.
def main(args: Array[String]) : Unit = //Body
Read full article from Learning Scala part three – Executing Scala code
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