Install and Use Simple Build Tool

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本文介绍如何在MacOS环境下使用MacPorts安装Scala构建工具sbt，并通过创建一个简单的Scala项目来验证安装是否成功。文章还展示了如何运行这个简单项目以及sbt的基本工作原理。

Install and Use Simple Build Tool
1. Installing sbt
If I have MacPorts, I will use this command to do so.
>sudo port selfupdate
Update the MacPorts tool itself to update.

>sudo port install sbt

2. Create a simple project to validate my installation.
>mkdir hello
>cd hello
>echo 'object Hi { def main(args: Array[String]) = println("Hi!") }' > hw.scala
>sbt
sbt>run
…Hi!…

That is how I run the simple project. And I can also run it like this.
>sbt run

The command will check
Sources in the base directory
Sources in src/main/scala or src/main/java
Tests in src/test/scala or src/test/java
Data files in src/main/resources or src/test/resources
jars in lib

We can also have the build definition files.
build.sbt
project/
Build.scala

references:
https://github.com/harrah/xsbt
http://www.scala-sbt.org/release/docs/Getting-Started/index.html