Where communities thrive


  • Join over 1.5M+ people
  • Join over 100K+ communities
  • Free without limits
  • Create your own community
People
Repo info
Activity
    Jarl Friis
    @jarl-dk
    Hi
    When cloning the github repo and starting sbt It loads a lot and then fails with java.lang.NullPointerException. Can Anyone help me to figure out what I am doing wrong?
    Dean Wampler
    @deanwampler
    Stack trace, please?
    Jarl Friis
    @jarl-dk
    I am sorry. Cannot reproduce. I am pretty sure it was related to JAVA_HOME pointing to JAVA 11. Using JDK 8, everything seems to work.
    Dean Wampler
    @deanwampler
    Okay. Thanks for the update. Useful to know. Scala 2.12 should work with JDK 11. I think the latest Scala 2.11 release also supports it, too, but I’m not sure.
    Jarl Friis
    @jarl-dk
    I think the setup was worse than so, the java binary in the path was 1.8, but JAVA_HOME pointed to JDK 11, so an improper setup not worth investigating.
    Dean Wampler
    @deanwampler
    I'm in the very early stages of planning the 3rd edition of the book, which will come out in 2020 around the time Scala 3.0 is released. If you have suggestions for improvements you would like to see. Feel free to post them here or @ me on twitter, @deanwampler. Thanks!
    Related, I'll update the examples repo to Scala 2.12 and eventually 2.13, but probably on a different branch.
    Dean Wampler
    @deanwampler
    Oh, and I should have done this a loooong time ago, but I created a twitter account for the book finally, @ProgScala
    Dean Wampler
    @deanwampler
    Last night I updated the Programming Scala example code for Scala 2.12, along with most dependencies. The compiler flags are also stricter, so some code changes where required. Partial support for 2.13 is there, but I need a release of @scalatest first that supports 2.11-2.13.
    Seth Tisue
    @SethTisue
    @deanwampler doesn't 3.0.8-RC4 support 2.11-2.13? (or are you not comfortable with using an RC?)
    Dean Wampler
    @deanwampler
    Yeah, I think you’re right. (This page is kind of a mess: https://mvnrepository.com/artifact/org.scalatest/scalatest) I’ll try it. Thanks!
    Seth Tisue
    @SethTisue
    is the book code in a form where we could add it to the Scala community build?
    Dean Wampler
    @deanwampler
    Yes. It’s SBT based with tests. You should be able to clone and run sbt +test
    (+ just covers 2.11.12 and 2.12.8 ATM…)
    Dean Wampler
    @deanwampler
    Thanks again for the suggestion, @SethTisue. I just pushed updates so the repo builds and the tests run for Scala 2.11.12, 2.12.8, and 2.13.0-RC2.
    Seth Tisue
    @SethTisue
    community build addition went smoothly: scala/community-builds@0e455e2 , [info] Project prog-scala-examples---------: SUCCESS (project rebuilt ok)
    Dean Wampler
    @deanwampler
    That’s great! Thanks
    Dean Wampler
    @deanwampler
    Hi, I just renamed the GitHub repo to https://github.com/deanwampler/programming-scala-book-code-examples, in preparation for starting the 3rd edition of the book. This channel still works (although I would like to rename it, if I new how...).
    Apparently you can send email to Gitter and ask them to do the rename...
    Dean Wampler
    @deanwampler
    You'll notice that the channel has been renamed!
    Dean Wampler
    @deanwampler
    Update: I'm close to finished with the code examples for the third edition. There will be some changes as I refine the text and adapt to last-minute changes to Scala 3 itself. https://github.com/deanwampler/programming-scala-book-code-examples
    Dean Wampler
    @deanwampler
    The third edition has gone to production, so I've tagged the repo 3.0.0-RC1. There may still be some corrections to examples before the book is finalized, but not many!
    Dean Wampler
    @deanwampler
    Programming Scala, Third Edition is now published! Ebooks will be available within the next week and print copies a few weeks from now. You can find details at http://programming-scala.com. I've also created a release in the code examples repo, 3.0.0-final.
    Sebastián Gallardo
    @4StockedMarth_twitter
    hey there, I installed the scala 3 repl on windows 10, I open it by typing scala3-repl on my command line, I know you can load files into the repl by typing :load <file> but how can I load a file with arguments?? If I write lets say :load <file> a with a being an argument, the repl complies saying that "cannot find 'file a'" like if 'a' was a part of the file
    Dean Wampler
    @deanwampler
    That's not a supported feature. It wants to load multiple files. Are you trying to load a script that takes arguments. I believe that scala3-repl <file> a should work. (I didn't know the REPL was called scala3-repl on Windows...)