groovy闭包两个返回值举例

Groovy闭包可以返回多个值，可以通过使用元组（Tuple）或者Map对象来实现。下面是两个返回值的示例：

1. 使用元组（Tuple）返回两个值

def myClosure = { a, b -> return [a + b, a - b] }
def result = myClosure(5, 3)
assert result instanceof Tuple
assert result.size() == 2
assert result[0] == 8
assert result[1] == 2

2. 使用Map对象返回两个值

def myClosure = { a, b -> return [sum: a + b, diff: a - b] }
def result = myClosure(5, 3)
assert result instanceof Map
assert result.size() == 2
assert result.sum == 8
assert result.diff == 2