For each element within the array, a message is fired with the selected item of the array stored within the Fan Out Context, which is covered in more detail later in this article.
对于数组中的每个元素，为存储在扇出上下文中的数组中的选定项触发一条消息，本文的稍后部分将对此进行详细说明。
The following applications, like all the articles in our Best of series, are selected by the amount of traffic each article gathered over the course of the year.
以下的这些应用和我们的其它“最给力”系列一样，也是根据每篇文章一年期间获得的流量而评选出来的。
In the example for this article, you are creating a painting tool that can be selected from the toolbox.
在本文的示例中，您将创建一个可以从工具箱中选择的绘图工具。
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