scala

When it comes to generating random strings with the scala.util.Random class, I haven't figured out yet how to use the nextString method. I've tried using it in several different ways, but I always get a string of question marks as output, like this:

Scala script FAQ: How do I set the CLASSPATH in a Scala shell script?

If you need to set the CLASSPATH when executing a Scala script, the following example code at the top of your script should do the trick for you:

#!/bin/sh
exec scala -classpath "lib/htmlcleaner-2.2.jar:lib/scalaemail_2.9.1-1.0.jar:lib/stockutils_2.9.1-1.0.jar" "$0" "$@"
!#

As you can see from that code, I'm adding three jar files to my classpath at the beginning of my Scala shell script.

Scala String FAQ: Does Scala have a String method like chomp or chop that you find in Perl?

If you're using Scala and want a String chomp or chop method you're used to in languages like Perl to remove end of line characters, it looks like the stripLineEnd method will do what you want, as shown in the REPL:

If you ever need an example of how to do something when a Play Framework application starts up, check out the Zentasks application in the Play distribution samples directory. You'll find the following code in the Global.scala file in the app subdirectory of the project. It shows how to use the onStart method of the Global object to populate some sample data when the Play Framework app starts up.

Here's the source code for that class:

While looking for code on how to create a random string in Scala, I came across this article, which shows one approach for creating a random string. For my brain today, it also shows a nice way to create a list of alpha or alphanumeric characters.

For instance, to create a list of alphanumeric characters, use this approach: