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Subject: Re: [Boost-users] Simple example program builds but hangs when I run it. (Ubuntu).
From: vincegata (vincegata_at_[hidden])
Date: 2012-01-24 15:44:21


That was a problem with Qt Creator not communicating with gdb. Thank you
for your replies.

SOLVED.

On Tue, Jan 24, 2012 at 7:28 AM, Larry Evans <cppljevans_at_[hidden]>wrote:

> On 01/23/12 17:43, vincegata wrote:
> > Hello,
> >
> > I run Ubuntu 11.04. I downloaded Boost 1.48.0, then I followed the
> > instructions from Getting Started on Unix variants to build the
> > libraries into /usr/local/include and /usr/local/lib. Now, I build the
> > Simple example program without any errors, however
> > when I run the program it just hangs indefinitely on std::for_each()
> line.
> >
> > Could someone help me with this please?
> >
> >
> > $: g++ -g -lboost_filesystem main.cpp
> >
> > #include <boost/lambda/lambda.hpp>
> > #include <iostream>
> > #include <iterator>
> > #include <algorithm>
> >
> > int main()
> > {
> > using namespace boost::lambda;
> > typedef std::istream_iterator<int> in;
> >
> > std::for_each(in(std::cin), in(), std::cout << (_1 * 3) << " " );
> > int stop = 1;
> > }
> >
> >
> What's in std::cin?
> What output do you expect to see?
>
> -regards,
> Larry
>
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