Re: [boost] Reforming Boost.System and <system_error> round 2

2018-01-16 17:05 GMT+01:00 Andrey Semashev via Boost :

On 01/16/18 18:56, Olaf van der Spek via Boost wrote:

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On Mon, Jan 15, 2018 at 10:18 PM, Niall Douglas via Boost wrote:

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Question: is this still considered too much overhead? Note that there is no longer ANY proposed breaking change with existing code. This is now 100% enhancement only.

Can't the is_error bool be stored in the ec object itself, at construction time?

Actually, I like this idea. I've modified my benchmark accordingly and it shows nearly identical performance as the current `std::error_code`:

Experimental test: 253654 usec, 394237820.022550 tests per second Experimental2 test: 46353 usec, 2157357668.327832 tests per second std test: 45981 usec, 2174811335.116679 tests per second

This is now getting closer to Boost.outcome, isn't it? Regards, &rzej;