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Merge pull request #84 from nat-goodspeed/develop

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Reinstate binding promise to lambda with move
This commit is contained in:
Oliver Kowalke
2016-05-01 16:41:37 +02:00
parent 5c18abdbed ba67ad63fc
commit f628f096d5
1 changed files with 14 additions and 1 deletions
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15
examples/adapt_callbacks.cpp
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@@ -106,11 +106,24 @@ AsyncAPI::errorcode write_ec( AsyncAPI & api, std::string const& data) {
// happen with fibers::promise, a robust way to deal with the lifespan
// issue is to bind 'promise' into our lambda. Since promise is move-only,
// use initialization capture.
#if defined(__cpp_init_captures)
api.init_write(
data,
[&promise]( AsyncAPI::errorcode ec) mutable {
[promise = std::move(promise)]( AsyncAPI::errorcode ec) mutable {
promise.set_value( ec);
});
#else // ! defined(__cpp_init_captures)
// std::bind() workaround for initialization capture from
// http://stackoverflow.com/questions/8640393/move-capture-in-lambda
api.init_write(
data,
std::bind([](boost::fibers::promise< AsyncAPI::errorcode > & promise,
AsyncAPI::errorcode ec) {
promise.set_value( ec);
}, std::move(promise), std::placeholders::_1);
#endif // __cpp_init_captures
return future.get();
}
//]