Re: [boost] [bind] placeholders in namespace ::

Subject: Re: [boost] [bind] placeholders in namespace ::
From: lcaminiti (lorcaminiti_at_[hidden])
Date: 2011-10-25 09:49:33

Robert Jones-2 wrote:
> 
> On Mon, Oct 24, 2011 at 11:36 PM, lcaminiti <lorcaminiti@> wrote:
> 
>>
>> >From the example above, the docs, and the source code, I am pretty sure
>> Boost.Bind placeholders are defined in the unnamed namespace :: ... why?
>> Isn't it a bad practice for a library to pollute the unnamed namespace?
>>
>>
> Yes, you are correct, they are, and yes you are correct it's almost
> certainly a mistake.
> This comes up time and time again, and I think it's fair to say it's about
> the most
> recognized misjudgement in Boost, but it's also water under the bridge
> now,
> and
> would be massively disruptive to change it. I guess at the time _1 seemed
> a
> pretty innocent token token to put in the global namespace, and of course
> it does allow you to use placeholders unqualified.
> 
> When Boost.Bind was more or less adopted as std.bind, this was changed.
> 

OK, it makes sense. (Maybe these historic reasons could be added to the docs
to avoid further questioning...)

Thanks a lot.
--Lorenzo

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