scala
libraryDependencies += "com.lihaoyi" %% "mainargs" % "0.2.12"
scala
import org.mainargs._
@maincase class HelloWorldParams(
@arg(default = "World")
name: String,
@arg(doc = "The number of times to repeat the message")
count: Int
)
object HelloWorld extends App {
@doc("Print a hello message to the specified name")
def main(@arg(name = "name", doc = "The name to greet") name: String): Unit = {
println(s"Hello, $name!")
}
@doc("Print a hello message to the specified name multiple times")
def repeat(params: HelloWorldParams): Unit = {
for (_ <- 1 to params.count) {
println(s"Hello, ${params.name}!")
}
}
CommandLineParser.execute(args)
}
shell
scala HelloWorld.scala main Bob
shell
scala HelloWorld.scala repeat --name Bob --count 3
