The Scala Toolkit

How to write a file?

Language

    You can require the entire toolkit in a single line:

    //> using toolkit latest

    Alternatively, you can require just a specific version of OS-Lib:

    //> using dep com.lihaoyi::os-lib:0.9.1

    In your build.sbt, you can add a dependency on the toolkit:

    lazy val example = project.in(file("."))
  .settings(
    scalaVersion := "3.3.4",
    libraryDependencies += "org.scala-lang" %% "toolkit" % "0.1.7"
  )

    Alternatively, you can require just a specific version of OS-Lib:

    libraryDependencies += "com.lihaoyi" %% "os-lib" % "0.9.1"

    In your build.sc file, you can add a dependency on the Toolkit:

    object example extends ScalaModule {
  def scalaVersion = "3.3.4"
  def ivyDeps =
    Agg(
      ivy"org.scala-lang::toolkit:0.1.7"
    )
}

    Alternatively, you can require just a specific version of OS-Lib:

    ivy"com.lihaoyi::os-lib:0.9.1"

    Writing a file all at once

    os.write writes the supplied string to a new file:

    val path: os.Path = os.temp.dir() / "output.txt"
os.write(path, "hello\nthere\n")
println(os.read.lines(path).size)
// prints: 2

    Overwriting or appending

    os.write throws an exception if the file already exists:

    os.write(path, "this will fail")
// this exception is thrown:
// java.nio.file.FileAlreadyExistsException

    To avoid this, use os.write.over to replace the existing contents.

    You can also use os.write.append to add more to the end:

    os.write.append(path, "two more\nlines\n")
println(os.read.lines(path).size)
// prints: 4
    ← previous next →

    Contributors to this page:

    Contents
    Problem with this page?
         Please help us fix it!