dolphindb中如何实现a=[INT, INT, LONG]；b=["1", "2", "3"]；b$a

Question

请问一下，DolphinDB有没有实现这种操作的函数：

a = [INT, INT, LONG]
b = ["1", "2", "3"]
c = b $ a

Answer 1

可以使用dolphindb中的高阶函数loop，示例代码如下：

a = [INT, INT, LONG]
b = ["1", "2", "3"]
c = loop($, b, a)