Re: [Boost-users] Question Regarding Boost 1.33.1 on MSVC.NET 2003

From: Wu Yinghui, Freddie (yhwu_at_[hidden])
Date: 2006-01-11 20:57:00

Peter Dimov wrote:
> The problem is that
> 
>     boost::bind(&OperatorMap::value_type::second, _1)
> 
> returns an Operator by value (in 1.33.1) or by const reference (in the 
> current CVS). Since boost::bind needs to decide on a result type at bind 
> time, and since it doesn't know whether the argument coming in from the _1 
> is const, it needs to conservatively assume const (Lambda doesn't have this 
> limitation because it deduces the return type at call time).
> 
> Use
> 
>     boost::bind<Operator&>(&OperatorMap::value_type::second, _1)
> 
> to tell boost::bind to return a non-const reference.

Thanks for your quick reply!

I noticed this problem at about the same time, and tried it out already.
This modification indeed worked.

Cheers,

Freddie

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Wu Yinghui, Freddie
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