什么是BatchBlock的相对块 [英] What is the opposite block of BatchBlock

问题描述

给出:

电子邮件ID列表

我在做什么:

有了BatchBlock组ID并为每个块调用一个Transformblock，简化的transformblock如下所示:

With the BatchBlock group ids and call a Transformblock for each block the simplified transformblock looks like this:

var readBatch = new TransformBlock<List<int>, IEnumerable<Email>>(idList =>
{
    List<Email> mails = new List<Email>();
    foreach(var id in idList)
    {
        mails.Add(new Email(id));
    }
    return mails;
});

现在我的下一个TransformBlock定义如下

Now my next TransformBlock is defined like this

TransformBlock<Email,EMail> filterStep;

我搜索的内容:因此，我需要一个块，该块允许我获取一个集合作为源并返回N个元素作为结果.因此，在这种情况下，一个接收 IEnumerable< Email> 并为枚举中的每个条目返回 Email 的块.

What I search: So I need a block which allows me to get a collection as source and returns N-Elements as result. So in this case a block which receives a IEnumerable<Email> and returns Email foreach entryin the enumeration.

所以我搜索的内容与BatchBlock相反，但我找不到它.我在俯视什么吗?

So what I search is the opposite of the BatchBlock but i can't find it. Am I overlooking something?

推荐答案

您需要的块是

The block you need is TransformManyBlock. You return an IEnumerable<Email> from the the block's func and it automatically transfers each item individually:

var transformManyBlock = new TransformManyBlock<IEnumerable<Email>, Email>(emails => emails);

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