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Subject: Re: [std-proposals] C++20 chrono library can't use max date?
From: Akira Takahashi (faithandbrave_at_[hidden])
Date: 2019-12-26 01:52:12


2019年12月22日(日) 2:18 Thiago Macieira via Std-Proposals <
std-proposals_at_[hidden]>:

> On Saturday, 21 December 2019 05:42:44 PST Andrey Semashev via
> Std-Proposals
> wrote:
> > Time points and durations, at least from the system and steady clocks,
> > are not intended to be used for representing calendar dates, especially
> > not in the far past or future. One of their main use cases is relatively
> > short term timed operations (e.g. various timeouts, operation intervals
> > and scheduling, etc.), meaning that magnitute orders of sub-seconds to
> > seconds are much more prevalent than hours, days or even years. These
> > clocks and associated time points and durations are designed to be
> > efficient for that use case. Choosing e.g. a larger representation type
> > to increase the range would add unneeded performance overhead.
>

Thanks a lot.
I understand chrono design and purpose.



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