Begin by creating a recursive concat function.
首先创建递归的concat函数。
Figure 22 shows two fields using the Concat function to join into one single field.
图22显示了使用Concat功能联接为单个字段的两个字段。
As an example to illustrate one of these functions, let's consider the array concat function.
作为演示其中一个这类函数的例子，让我们考虑array concat函数。
应用推荐