Re: [Boost-users] [lambda] Lambda bind and upgrading

Subject: Re: [Boost-users] [lambda] Lambda bind and upgrading
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2011-04-04 11:34:51

AMDG

On 04/04/2011 08:26 AM, Swerts, Benjamin wrote:
> In the process of upgrading Boost from 1.39.0 to 1.46.1 I encountered a
> few problems with Boost.Lambda. Some places where I used bind and
> operator== are not compiling anymore with Visual Studio 2008 SP1. Here's
> a self-contained example showing the problem:
>

Bother.  I thought I fixed this.

> ---------------------
> #include<algorithm>
> #include<vector>
> #include<boost/lambda/lambda.hpp>
> #include<boost/lambda/bind.hpp>
> using boost::lambda::bind;
> using boost::lambda::_1;
>
> struct A { unsigned int id; };
> struct B { const A* a; };
>
> int main()
> {
>    const std::vector<B>  vb;
>    std::find_if(vb.begin(), vb.end(), bind(&A::id, bind(&B::a, _1)) ==
> 2);
>    return 0;
> }
> ---------------------
>
> - This code compiles fine with Boost 1.39.0
> - When compiled with Boost 1.46.1 it shows the following error:
>
>    boost_1_46_1/boost/lambda/detail/function_adaptors.hpp(280) : error
> C2440: 'return' : cannot convert from 'const unsigned int' to 'unsigned
> int&'
>

In Christ,
Steven Watanabe