[Boost-bugs] [Boost C++ Libraries] #8678: Async: Add future<>::fallback_to

Subject: [Boost-bugs] [Boost C++ Libraries] #8678: Async: Add future<>::fallback_to
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-06-09 09:56:48

#8678: Async: Add future<>::fallback_to
------------------------------+----------------------
 Reporter:  viboes            |      Owner:  anthonyw
     Type:  Feature Requests  |     Status:  new
Milestone:  To Be Determined  |  Component:  thread
  Version:  Boost 1.54.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+----------------------
 Quite often the user as a fall back value that should be used when the
 future has an exception.

 This factory creates a new future that will fall back to the parameter if
 the source future will be ready with an exception. The following


 {{{
   f.fallback_to(v);
 }}}

 is a shortcut for


 {{{
   f.then([](future<T> f) {
     return f.get_or(v);
   });
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8678>
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