Re: [boost] [gsoc-2013] Boost.Expected

29 Apr 2013


      Le 28/04/13 23:28, Rob Stewart a écrit :
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On Apr 28, 2013, at 2:17 PM, "Pierre T."  wrote:
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On 04/28/2013 07:30 PM, Vicente J. Botet Escriba wrote:
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Yes this is quite similar if we had exceptions and we had a try/catch block
f0().then(f1).then(f2).then(f3).visit_error(error_visitor);
try {
  f3(f2(f1(f0())));
} catch(...) {
  error_visitor();
}
When the chain gets long, try blocks make increasing sense.
Agreed.
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It would be great if we could have the equivalent for
try {
  h(f(), g());
} catch(...) {
  error_visitor();
}
when_all(f(), g()).then(h).visit_error(error_visitor);
"if_all" seems better than "when_all".
+1.

Vicente