- 字符串
1.1字符串段落
def s = """Groovy Grails JAVA """ 输出结果： Groovy Grails JAVA
1.2 字符串操作运算符
//乘法 assert "hellohello" == "hello" * 2 //减法def st1 = "helloWorld" def st2 = "World"assert "hello" == st1 - st2 //截取字符串def st1 = "helloWorld"assert "hello" == st1[0..4] assert "World" == st1[5..9] assert "World" == st1[-1..-5] //从右边截取字符串
1.3数字运算
| 运算符 | 名称 | 方法 |
| a + b | 加 | a.plus(b) |
| a | b | 减 | a.minus(b) |
| a * b | 乘 | a.multiply(b) |
| a / b | 除 | a.div(b) |
| a % b | 取余 | a.mod(b) |
| a++ | 后自增 | a.next() |
| a-- | 后自减 | a.previous() |