learning scala regular expression patterns

package com.aura.scala.day01

import scala.util.matching.Regex


object regularExpressionPatterns {
  def main(args: Array[String]): Unit = {
    // example 1
    // .r 方法可便任意字符串变成一个正则表达式
    val numberPatter: Regex = "[0-9]".r
    numberPatter.findFirstMatchIn("dsafasdfasfasfas") match {
      case Some(_) => println("Password OK")
      case None => println("Password must contain a number")
    }
    // example 2
    val KeyValPattern: Regex = "([0-9A-Za-z-#() ]+):([0-9A-Za-z-#() ]+)".r
    val input: String =
      """
        |background-color: #A03300;
        |background-image: url(img/header100.png);
        |background-position: top center;
        |background-repeat: repeat-x;
        |background-size: 2160px 108px
        |margin: 0;
        |height: 108px;
        | 100%;
      """.stripMargin
     for( patternMath <-  KeyValPattern.findAllMatchIn(input))
       println(s"key:${patternMath.group(1)} value:${patternMath.group(2)}")
  }
}

output:

"D:Program FilesJavajdk1.8.0_201injava.exe" "-javaagent:D:Program FilesJetBrainsIntelliJ IDEA 2019.1.3libidea_rt.jar=8599:D:Program FilesJetBrainsIntelliJ IDEA 2019.1.3in" -Dfile.encoding=UTF-8 -classpath "D:Program FilesJavajdk1.8.0_201jrelibcharsets.jar;D:Program FilesJavajdk1.8.0_201jrelibdeploy.jar;D:Program FilesJavajdk1.8.0_201jrelibextaccess-bridge-64.jar;D:Program FilesJavajdk1.8.0_201jrelibextcldrdata.jar;D:Program FilesJavajdk1.8.0_201jrelibextdnsns.jar;D:Program FilesJavajdk1.8.0_201jrelibextjaccess.jar;D:Program FilesJavajdk1.8.0_201jrelibextjfxrt.jar;D:Program FilesJavajdk1.8.0_201jrelibextlocaledata.jar;D:Program FilesJavajdk1.8.0_201jrelibext
ashorn.jar;D:Program FilesJavajdk1.8.0_201jrelibextsunec.jar;D:Program FilesJavajdk1.8.0_201jrelibextsunjce_provider.jar;D:Program FilesJavajdk1.8.0_201jrelibextsunmscapi.jar;D:Program FilesJavajdk1.8.0_201jrelibextsunpkcs11.jar;D:Program FilesJavajdk1.8.0_201jrelibextzipfs.jar;D:Program FilesJavajdk1.8.0_201jrelibjavaws.jar;D:Program FilesJavajdk1.8.0_201jrelibjce.jar;D:Program FilesJavajdk1.8.0_201jrelibjfr.jar;D:Program FilesJavajdk1.8.0_201jrelibjfxswt.jar;D:Program FilesJavajdk1.8.0_201jrelibjsse.jar;D:Program FilesJavajdk1.8.0_201jrelibmanagement-agent.jar;D:Program FilesJavajdk1.8.0_201jrelibplugin.jar;D:Program FilesJavajdk1.8.0_201jrelib
esources.jar;D:Program FilesJavajdk1.8.0_201jrelib
t.jar;C:UsersadminIdeaProjectsScalaDayoutproductionScalaDay;C:Program Files (x86)scalalibscala-actors-2.11.0.jar;C:Program Files (x86)scalalibscala-actors-migration_2.11-1.1.0.jar;C:Program Files (x86)scalalibscala-library.jar;C:Program Files (x86)scalalibscala-parser-combinators_2.11-1.0.4.jar;C:Program Files (x86)scalalibscala-reflect.jar;C:Program Files (x86)scalalibscala-swing_2.11-1.0.2.jar;C:Program Files (x86)scalalibscala-xml_2.11-1.0.4.jar" com.aura.scala.day01.regularExpressionPatterns
Password must contain a number
key:background-color value: #A03300
key:background-image value: url(img
key:background-position value: top center
key:background-repeat value: repeat-x
key:background-size value: 2160px 108px
key:margin value: 0
key:height value: 108px
key:width value: 100