Re: Updated version of futures library

>> I've updated my futures library to include wait_for_any() and
>> wait_for_all().
>>
>> The provided overloads allow either waiting on up to five futures
>> known at compile time:
>>
>> unique_future<int> f1;
>> shared_future<std::string> f2;
>> unique_future<double> f3;
>> unsigned const ready_index=wait_for_any(future1,future2,future3);
>>
>> or on a container of futures:
>>
>> std::vector<jss::shared_future<int> > futures;
>> std::vector<jss::shared_future<int> >::iterator const future=
>>     jss::wait_for_any(futures.begin(),futures.end());
>>
>> In the first instance, they can be of distinct types, but in the
>> latter, all the futures in the container must be of the same type.
>>
>> The documentation is available at
>> http://www.justsoftwaresolutions.co.uk/files/futures_documentation.html
>> and the files and tests are available at
>> http://www.justsoftwaresolutions.co.uk/files/n2561_futures_revised_2008
>> 0530.zip
>
> This reminds me of a discussion we had some time ago, namely overloading
> operator&&() for futures allowing to achieve the same thing: waiting for all
> of the futures: