In map Rules, the order in which the input values for a functional map are specified does not affect how many times the map is called, but it does affect the order in which the output objects appear.

在映射规则中，为功能性映射指定输入值的次序并不影响调用映射的次数，但是会影响输出对象出现的次序。

youdao

The initialization of the "input" and "output" objects was omitted from the above sample code for a good reason: it's more complicated than the rest of the code.

在上面这个简单的例子中，我们将对“input”和“output”对象的初始化工作都省略了，原因在于：与其余代码相比，这些工作要更加复杂。

youdao

The initialization of the "input" and "output" objects was omitted from the above sample code for a good reason: it's more complicated than the rest of the code.

在上面这个简单的例子中，我们将对“input”和“output”对象的初始化工作都省略了，原因在于：与其余代码相比，这些工作要更加复杂。

youdao