Boost logo

Boost :

Subject: Re: [boost] Interest in an 'either' library?
From: Giovanni Piero Deretta (gpderetta_at_[hidden])
Date: 2013-06-25 19:24:02

On Tue, Jun 25, 2013 at 11:14 PM, Eric Niebler <eniebler_at_[hidden]> wrote:
> On 13-06-25 01:53 AM, Giovanni Piero Deretta wrote:
>> On Mon, Jun 24, 2013 at 8:19 PM, Eric Niebler <eniebler_at_[hidden]> wrote:
>>> On 13-06-24 11:53 AM, Pierre Talbot wrote:
>> [...]
>>> And while I'm thinking of it, I see lots of potential with try_call and
>>> C++14's generic lambdas. Wish I had a compiler that implements them. In
>>> the above, if h is not something that can be passed as a parameter,
>>> you'd want this:
>>> try_call([](auto &&...args){return
>>> h(forward<decltype-dance>(args)...);})(f(), "hello world", g(), 42);
>>> This begs to be wrapped up in a macro.
>> Yet another use case for n3617:
>> try_call([]h)(f(), "hello world", g(), 42);
> Oooh, that's nice. Has this been discussed yet in committee?
>> See
>> for a C++11 macro based proof-of-concept implementation.

As far as I know it hasn't been discussed at last meeting. Not sure
whether for lack of time or lack of a sponsor.

-- gpd

Boost list run by bdawes at, gregod at, cpdaniel at, john at