Question

我是Scala的新手，由于一些要求，我需要运行列出here的Rescala（反应式Scala）程序。例如，要运行 clickcounter 应用程序，我该怎么办？任何投入都会有很大的帮助。

Answer 1

尝试scala console，

安装sbt（简单构建工具） - https://dl.bintray.com/sbt/native-packages/sbt/0.13.13/sbt-0.13.13.tgz
创建一个空文件夹
使用

build.sbt

// rescala依赖

scalaVersion := "2.11.8"

resolvers += Resolver.bintrayRepo("rmgk", "maven")
resolvers += Resolver.bintrayRepo("pweisenburger", "maven")

// %% will use the scalaVersion defined for scala
libraryDependencies += "de.tuda.stg" %% "rescala" % "0.19.0"

然后转到控制台，只需触发sbt console命令，该命令将为您下载rescala

//你会看到一些日志

sbt console
info] Resolving org.fusesource.jansi#jansi;1.4 ...
[info] downloading https://dl.bintray.com/rmgk/maven/de/tuda/stg/rescala_2.11/0.19.0/rescala_2.11-0.19.0.jar ...
[info]  [SUCCESSFUL ] de.tuda.stg#rescala_2.11;0.19.0!rescala_2.11.jar (1301ms)
[info] downloading https://dl.bintray.com/pweisenburger/maven/de/tuda/stg/retypecheck_2.11/0.1.0/retypecheck_2.11-0.1.0.jar ...
[info]  [SUCCESSFUL ] de.tuda.stg#retypecheck_2.11;0.1.0!retypecheck_2.11.jar (751ms)
[info] downloading https://repo1.maven.org/maven2/org/scalamacros/resetallattrs_2.11/1.0.0/resetallattrs_2.11-1.0.0.jar ...
[info]  [SUCCESSFUL ] org.scalamacros#resetallattrs_2.11;1.0.0!resetallattrs_2.11.jar (134ms)
[info] Done updating.

然后你可以import rescala._
然后，您可以在此处尝试基本的Singnal和Var示例 - http://guidosalva.github.io/REScala/manual/#signals-and-vars

//

scala> import rescala._
import rescala._

scala> val initialState = Var(28)
initialState: rescala.Var[Int] = <console>(14)

scala> val changeSignal: Signal[Int] = Signal{ initialState() + 1 }
changeSignal: rescala.Signal[Int] = <console>(15)

scala> initialState.now
res1: Int = 28

scala> changeSignal.now
res2: Int = 29

与您关于如何运行scala clickcounter示例的问题相同。进入内部，将rescala.jar放入类路径并运行它，或者只是创建一个build.sbt并从控制台运行它。

如何运行Rescala程序

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