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### 2920. Add a deduction guide for creating a `shared_future` from a `future` rvalue

Section: 33.10.8 [futures.shared.future] Status: Resolved Submitter: United States Opened: 2017-02-03 Last modified: 2021-06-06

Priority: Not Prioritized

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Discussion:

Addresses US 164

Add a deduction guide for creating a shared future from a future rvalue.

Proposed change:

Add to the `<future>` synopsis:

>     template <class R>
>     shared_future(future<R>&&) -> shared_future<R>;

[2017-03-12, post-Kona]

Resolved by P0433R2.

Proposed resolution:

This wording is relative to N4618.

1. Add to the synopsis of `<future>`:

   >     template <class R>
   >     shared_future(future<R>&&) -> shared_future<R>;