Subject: Re: [boost] Futures
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2015-01-04 18:01:57
On 04/01/2015 16:55, Sebastian Schaetz wrote:
> Thomas Heller <thom.heller <at> gmail.com> writes:
>
>> Interesting. Let me try to explain what I am seeing in the future concept
> first
>> and try to translate that async_result:
>> For me, the concept behind futures is twofold, you have the future<T> on the
>> *receiving* side which is, apart from the return type of the async operation,
>> a completely type erased (as in type of asynchronous operation) handle to a
>> future result. Things like promise, packaged_task or whatnot represent the
>> *sending* side of the operation.
>
> I'm really happy about this discussion here. Can you clarify what you mean
> by a future being type erased? You don't mean to say a future is a
> future<any>, do you?
Presumably that the type of the future does not contain the type of the
callable function object it contains, thus requiring dynamic memory
allocation and indirection.