Setting an empty item template would only show the template but not the header or the footer.
设置一个空项目模板只可以显示模板而不是页眉或页脚。
At this stage, each item in the list has an empty frame associated with it.
在这个阶段，列表中的每个项目都有一个与它关联的空白框架。
Next, you create a var called history that is just an empty list and then a var called droid that is an item.
接下来，创建一个名为history 的var，它只是一个空列表，然后是名为droid 的 var ，它是个项。
This example shows how to create a simple list containing the integers from 0 to 9, inclusive, as well as how to create an empty list and a list containing a single item.
本例展示如何创建包含从0到9（包括 0和 9）的简单list，以及如何创建一个空列表和一个包含单个条目的列表。
For lists that needed extra space, an empty paragraph was introduced between each list item.
对于需要额外空间的列表，每个列表项之间引入空段落。
In this case the starting value is returned for an empty sequence, and the function is first applied to the starting value and the first sequence item, then to the result and the next item, and so on.
如果序列是空的，就返回初始值，否则函数会先接收初始值和序列的第一个元素，然后是返回值和下一个元素，依此类推。
We aren't going to use this feature, so ensure that the Empty controller item is selected in the Template menu, as shown in the figure.
我们暂不打算使用这一特性，因此确保在模板菜单中选择了空控制器条目，如图所示。
Returns a pointer to the last item in the list, or null if the list is empty.
返回指向列表中最后一个项的指针，如果列表为空返回空。
A retailer wants to empty the inventory during a sale season due to that the salvage value of any unsold item is zero.
零售商试图在一个有限计划期内将固定的存货全部售出，剩余存货在销售季节结束时价值变为零。
When the value is a non-empty list, the text in the block will be displayed once for each item in the list.
当值为非空列表时，列表中的文本则会被遍历展示。
When the value is a non-empty list, the text in the block will be displayed once for each item in the list.
当值为非空列表时，列表中的文本则会被遍历展示。
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