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- // The simplest possible sbt build file is just one line:
- scalaVersion := "2.13.8"
- // That is, to create a valid sbt build, all you've got to do is define the
- // version of Scala you'd like your project to use.
- // ============================================================================
- // Lines like the above defining `scalaVersion` are called "settings". Settings
- // are key/value pairs. In the case of `scalaVersion`, the key is "scalaVersion"
- // and the value is "2.13.8"
- // It's possible to define many kinds of settings, such as:
- name := "spark-exam"
- organization := "ch.epfl.scala"
- version := "1.0"
- // Note, it's not required for you to define these three settings. These are
- // mostly only necessary if you intend to publish your library's binaries on a
- // place like Sonatype.
- // Want to use a published library in your project?
- // You can define other libraries as dependencies in your build like this:
- val sparkVersion = "3.4.1"
- libraryDependencies := List(
- "com.lihaoyi" %% "requests" % "0.8.0",
- "com.lihaoyi" %% "upickle" % "3.1.0",
- "com.lihaoyi" %% "os-lib" % "0.9.1",
- "org.apache.spark" %% "spark-core" % sparkVersion,
- "org.apache.spark" %% "spark-sql" % sparkVersion,
- )
- // Here, `libraryDependencies` is a set of dependencies, and by using `+=`,
- // we're adding the scala-parser-combinators dependency to the set of dependencies
- // that sbt will go and fetch when it starts up.
- // Now, in any Scala file, you can import classes, objects, etc., from
- // scala-parser-combinators with a regular import.
- // TIP: To find the "dependency" that you need to add to the
- // `libraryDependencies` set, which in the above example looks like this:
- // "org.scala-lang.modules" %% "scala-parser-combinators" % "2.1.1"
- // You can use Scaladex, an index of all known published Scala libraries. There,
- // after you find the library you want, you can just copy/paste the dependency
- // information that you need into your build file. For example, on the
- // scala/scala-parser-combinators Scaladex page,
- // https://index.scala-lang.org/scala/scala-parser-combinators, you can copy/paste
- // the sbt dependency from the sbt box on the right-hand side of the screen.
- // IMPORTANT NOTE: while build files look _kind of_ like regular Scala, it's
- // important to note that syntax in *.sbt files doesn't always behave like
- // regular Scala. For example, notice in this build file that it's not required
- // to put our settings into an enclosing object or class. Always remember that
- // sbt is a bit different, semantically, than vanilla Scala.
- // ============================================================================
- // Most moderately interesting Scala projects don't make use of the very simple
- // build file style (called "bare style") used in this build.sbt file. Most
- // intermediate Scala projects make use of so-called "multi-project" builds. A
- // multi-project build makes it possible to have different folders which sbt can
- // be configured differently for. That is, you may wish to have different
- // dependencies or different testing frameworks defined for different parts of
- // your codebase. Multi-project builds make this possible.
- // Here's a quick glimpse of what a multi-project build looks like for this
- // build, with only one "subproject" defined, called `root`:
- // lazy val root = (project in file(".")).
- // settings(
- // inThisBuild(List(
- // organization := "ch.epfl.scala",
- // scalaVersion := "2.13.8"
- // )),
- // name := "hello-world"
- // )
- // To learn more about multi-project builds, head over to the official sbt
- // documentation at http://www.scala-sbt.org/documentation.html
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