Re: [boost] [locale] Review

Subject: Re: [boost] [locale] Review
From: Noah Roberts (roberts.noah_at_[hidden])
Date: 2011-04-18 12:28:01

On 2011-04-16 01:45, Artyom wrote:
>
>
>
>
> ----- Original Message ----
>> From: Noah Roberts<roberts.noah_at_[hidden]>
>>
>> Actually, I  ran into what I would call a bug.
>>
>> #include<boost/locale.hpp>
>> #include<boost/lexical_cast.hpp>
>>
>> #include<iostream>
>>
>> using  namespace boost::locale;
>>
>> int main()
>> {
>>    generator  gen;
>>
>>     std::locale::global(gen("fr_CA.UTF-8"));
>>     //std::locale::global(std::locale(""));
>>
>>    std::string dbl =  boost::lexical_cast<std::string>(3.14);
>>    std::cout<<  dbl<<  std::endl;
>>
>>    std::cin.get();
>> }
>>
>> My language  settings currently use ',' as decimal separator as do the settings
>> for
>> the  french (Canada) language settings.
>>
>> The commented out version outputs  "3,14000000001".
>> This is what I would expect to happen.  The  boost::locale version
>> outputs "3.14000000001".
>>
>> It looks to me like the  punctuation stuff isn't being set up correctly.
>> The as::number thing  doesn't do anything either.  Only locale::format catches
>> on
>> and does it  right.

> It is by design.

Then what is the correct work-around to get past this "design"?  Some 
people, like me, make frequent use of boost::format (which your version 
cannot replace because it does not implement 'g' formatting), and other 
functions that output in characters specific to the locale and know 
nothing about as::anything.

This is a problem.  The library, perhaps rightly, doesn't follow 
standard conventions but it also doesn't replicate those functions which 
do.  Can I use only your translation functionality without imbuing the 
streams with your locale?  Something tells me that won't work out quite 
right.

If this design is going to stick, then there certainly needs to be a 
documented workaround so that those of us who need the behavior can get it.