Boost logo

Boost :

Subject: Re: [boost] New libraries implementing C++11 features in C++03
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2011-12-02 07:45:35

Nevin Liber wrote:
> On 1 December 2011 12:26, Stewart, Robert <Robert.Stewart_at_[hidden]>
> wrote:
> > I'm astounded at this line of thought, Dean. When choosing
> > between two courses of action with reasonably equivalent
> > outcomes, surely the one with the least cost is better.
> > Thus, if using a library that is prone to triggering horrible
> > error messages when misused is compared against using another
> > library this does not trigger such error messages when
> > misused, the choice is clear.
> But the way people avoid the hard to read error messages is to move
> the error detection to runtime, where it is easy to control the error
> messages. Unfortunately, error detection at runtime is usually much
> less thorough (as it is both hard to do and people don't want to incur
> the cost in correct code) and hence much more expensive. The choice
> is between hard to read errors found early vs. (typically) much less
> thorough error checking found later. To me, the choice is clear, in
> that I want to find as many errors as possible at compile time, even
> if those error messages are painful to understand and compile times
> are noticeably increased.

That's a false dichotomy. I'm not suggesting there are not cases such as you describe, but it isn't a necessary difference: type safety can be managed in multiple ways.

Furthermore, the choice may well be between compile time versus runtime execution of logic, in which case performance may be a sufficient driver to incur the troublesome error messages.

Rob Stewart robert.stewart_at_[hidden]
Software Engineer using std::disclaimer;
Dev Tools & Components
Susquehanna International Group, LLP


IMPORTANT: The information contained in this email and/or its attachments is confidential. If you are not the intended recipient, please notify the sender immediately by reply and immediately delete this message and all its attachments. Any review, use, reproduction, disclosure or dissemination of this message or any attachment by an unintended recipient is strictly prohibited. Neither this message nor any attachment is intended as or should be construed as an offer, solicitation or recommendation to buy or sell any security or other financial instrument. Neither the sender, his or her employer nor any of their respective affiliates makes any warranties as to the completeness or accuracy of any of the information contained herein or that this message or any of its attachments is free of viruses.

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