groovy的switch/case判断
switch/case
1 //java中switch只能传入int类型、byte,char和short类型能自动提升为int类型、String类型和后来扩展的enum类型 2 3 //在groovy中,switch可以传入任性类型的数据进行匹配 4 String judgeType(Object x) { 5 def result 6 switch (x) { 7 case "string": 8 result = "x is string" 9 break 10 case [4, 5, 6, 7,'inList']: //列表(数据结构中讲解) 11 result = "x is in list [4, 5, 6, 7,'inList']" 12 break 13 case 10..15: //范围range(数据结构中讲解) 14 result = "x is in range 10..15" 15 break 16 case Integer: 17 result = "x is Integer" 18 break 19 case BigDecimal: 20 result = "x is BigDecimal" 21 break 22 case List: 23 result = "x is List" 24 break 25 default: 26 result = "no match" 27 break 28 } 29 return result 30 } 31 32 def x = "string" 33 def x1 = 5 34 def x2 = 10 35 def x3 = 3 36 def x4 = 3.14 37 def x5 =[4,6] 38 def x6 ="hi groovy" 39 def x7 = "inList" 40 println judgeType(x) //x is string 41 println judgeType(x1) // x is in list [4, 5, 6, 7,'inList'] 42 println judgeType(x2) // x is in range 10..15 43 println judgeType(x3) // x is Integer 44 println judgeType(x4) // x is BigDecimal 45 println judgeType(x5) // x is List 46 println judgeType(x6) // no match 47 println judgeType(x7) // x is in list [4, 5, 6, 7,'inList']