为什么在C ++ 17中没有std :: future :: then？ [英] Why is there no std::future::then in C++17?

问题描述

boost :: future 具有成员函数： boost :: future :: then ，而 std :: future 没有 std :: future :: then 。

boost::future has a member function: boost::future::then, while std::future has no std::future::then.

这篇精彩的文章显示 std :: future :: then 的有用性。

为什么没有 std :: future :: then 在C ++ 17中？

Why is there no std::future::then in C++17?

这仅仅是疏忽，还是由于其他原因？

Is it just an oversight, or because of other rationale behind?

推荐答案

。然后支持并入了Concurrency TS，这是并发TS的实现几乎没有实践经验，并且在C ++ 17需要完成功能之前几乎没有剩余时间，因此并没有加入。确实，已经很晚了，他们没有实现。甚至不建议将其添加到C ++ 17。

.then support was incorporated into the Concurrency TS, which was finalized in early 2016. There was little practical experience with implementations of Concurrency TS, and with little time remaining until C++17 needed to be feature complete, it didn't make it in. Indeed, it was so late they didn't even bother proposing to add it to C++17.

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