Hey all! I am looking into ways how to replace bash by ammonite for writing general non-interactive scripts. From existance of
Ammonite-Shell/Scripting chapter in documentation I understand that this usecase is supported. One of essentials here is an ability to invoke system binaries. I see we have this ability throuhg %, %% commands. I have installed ammonite per instructions on ammonite.io. In this setup percent commands are available only when amm is run interactivly. This is because predef code with necessary imports is pre-executed only for interactive sessions. Should I solve this by importing predef file by hand in all my future scripts? Or is this a bad idea for some reason. If on the other hand it is a good idea why predef is not pre-executed when scripts are run non-interactively as well? Or is there another .ammonite file which is run before scripts like this? I hope you see my confusion. And thanks for ammonite!
In case this is helpful to anyone else, here’s what I came up with:
import $plugin.$ivy.`org.typelevel:::kind-projector:0.11.0`
interp.configureCompiler(_.settings.YpartialUnification.value = true)
interp.configureCompiler(_.settings.Ydelambdafy.tryToSetColon(List("inline")))
object load {
def fs2Version(version: String) = {
repl.load.apply(s"""
import $$ivy.`co.fs2::fs2-io:$version`, fs2._, fs2.concurrent._, cats._, cats.implicits._, cats.effect._, cats.effect.implicits._, scala.concurrent.duration._
implicit val ioContextShift: ContextShift[IO] = IO.contextShift(scala.concurrent.ExecutionContext.Implicits.global)
implicit val ioTimer: Timer[IO] = IO.timer(scala.concurrent.ExecutionContext.Implicits.global)
""")
if (!version.startsWith("1")) repl.load.apply("""
val globalBlocker: Blocker = cats.effect.Blocker.liftExecutionContext(scala.concurrent.ExecutionContext.Implicits.global)
""")
}
def fs2 = fs2Version("2.0.1")
}
Basically something simple like this
println("Enter encrypted data:")
val encryptedDataStr = scala.io.StdIn.readLine()
Hi everyone, can someone explain to me the behavior depicted in this screenshot?
I am saving a repl session and then import a script file which just contains a dummy function called test that simply prints "hi ho". Then I load the previously saved repl session again and import the file again but it cannot find the test function. Am I just not understanding something about file imports or is this strange behavior?
you could also write your own custom import hook, to do
import $fs2.blahblahblah instead of calling a magic function, but that's not really any better. Just a different spelling in the end
Hi I'm trying to use
ls.rec.iter! as mentioned in the docs (I'm using amm-1.8.1 in scala 2.12.10) and it doesn't seem to exist. I've tried ever other thing I can think of. If this doesn't exist, is there a good replacement, or advice on the best way to use ammonite.ops to do a ls.rec on a huge tree in a "streaming" fashion?
you can import the ammonite.ops functions but os.* reads much better in my opinion
plenty of docs there
Does anyone have an answer to this question? https://stackoverflow.com/questions/57557742/ammonite-how-to-use-another-script-from-an-ivy-dependency
Hi all, I'm working to embed Ammonite in my application, and I'd like to be able to pass an object from the application to the Ammonite environment, e.g.
def my_entrypoint(foo: Foo) = {
// Make `foo` accessible from the script.
ammonite.Main(...).runScript(...)
}I see the run method on Main would allow me to do this, but I want to be able to do this when running a script non-interactively - are there any methods that would allow me to achieve this?
I managed to get it working without a threadlocal with this:
ammoniteMain
.instantiateRepl(IndexedSeq("foo" -> foo)).map { repl =>
repl.interp.initializePredef()
ammonite.main.Scripts.runScript(...)
}The only issue is that it doesn't seem to pick up the @main annotations.
starting out in scala, was trying stuff out in ammonite - implicit conversions don't seem to take effect in the ammonite repl. is this expected behavior? (from Scala for the Impatient)
@ import scala.collection.JavaConverters.asScalaBufferConverter
import scala.collection.JavaConverters.asScalaBufferConverter
@ val tmp: Buffer[String] = flavors.getNativesForFlavor(DataFlavor.imageFlavor)
cmd44.sc:1: type mismatch;
found : java.util.List[String]
required: scala.collection.mutable.Buffer[String]
val tmp: Buffer[String] = flavors.getNativesForFlavor(DataFlavor.imageFlavor)
^
Compilation Failed
@
not sure about JavaConversions
Theyve been deprecated for a while, wouldn’t be surprised if they don’t work properly these days
