grooovy(5)-range(范围)

package variable

//定义范围Range 继承于List

def range=1..10 //或 Range range

println(range[3])//4

println(range.contains(3))//true

println(range.from)//1

println(range.to)//10

//遍历

range.each {//闭包

        println( it)

}

for(i in range){

        println(i)

}

示例：

def reslt=getGrade(75)

def getGrade(Number number){

    def result  

    switch(number){

                case0..60:        result='不及格'

                        break

                case60..<70:        result='及格'

                        break

                case70..<80:        result='良好'

                        break

                case80..100:        result='优秀'

                        break

            }

            result//return 可以不写

}

println(reslt)//良好