Re: [boost] Interest in an 'either' library?

Subject: Re: [boost] Interest in an 'either' library?
From: Eric Niebler (eniebler_at_[hidden])
Date: 2013-06-25 18:14:21

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 https://github.com/gpderetta/Experiments/blob/master/tests/quote_test.cc
> for a C++11 macro based proof-of-concept implementation.

-- 
Eric Niebler
Boost.org