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Subject: Re: [Boost-users] reference to ‘_1’ is ambiguous
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2009-03-17 23:50:20


Sandeep Gupta wrote:
> This problem has appeared before on the list but in a different
> context. The following code
> std::vector<int> myvec;
> for_each(myvec, std::cout<<_1<<' ');
> gives the error:
> Serializer.h:78: error: reference to ‘_1’ is ambiguous
> /home/sandeep/Computing/boost_1_38_0/boost/lambda/core.hpp:69: error:
> candidates are: const boost::lambda::placeholder1_type&
> boost::lambda::<unnamed>::_1
> /home/sandeep/Computing/boost_1_38_0/boost/bind/placeholders.hpp:54:
> error: boost::arg<1> <unnamed>::_1
> Serializer.h:78: error: reference to ‘_1’ is ambiguous
> I believe boost/bind is getting included indirectly via some other
> library. I have tried several modification but none seem to work as I
> was quite reluctant to post a third mail on the list.

qualify _1, either with boost::lambda:: or with some
namespace alias.

In Christ,
Steven Watanabe

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