Re: [Boost-users] Boost has a function to const-qualify?

16 Jan 2006

      Eric Niebler wrote:
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Thorsten Ottosen wrote:
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Eric Niebler wrote:
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...
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Not sure what you're referring to. Boost.Foreach does no such 
rvalue-to-lvalue cast.
So this wouldn't compile:
vector<int> foo();
...
BOOST_FOREACH( int& r, foo() )
  ++r
?
No, it doesn't compile, and it shouldn't. What would be the point of 
mutating the unnamed temporary vector returned by foo()?
I would probably be efficiency. Assume it was a vector of strings and 
that you had to append "_" to each of the strings and then pass the 
string to some other function.

Or maybe I wanted to do the following:

foo::copy( foo::unique( boost::as_mutable( foo() ) ), some_where );

-Thorsten