<p>I’ve finally corrected some of the mistakes that I published in my <a href="https://www.lonecpluspluscoder.com/2012/09/22/i-dont-want-to-see-another-using-namespace-xxx-in-a-header-file-ever-again/">blog post about the misuse of using namespace xxx</a>. My apologies for taking this long.</p>

<p>I was profiling some code a while ago that makes extensive use of boost::variant and one of the lessons from the profiler run was that boost variants appear to be fairly expensive to construct and copy.</p>

<p>There, I’ve said it. No tiptoeing around.</p>

<p>After all the brouhaha over Visual Studio 2012 not being able to build executables for Windows XP, it looks like Microsoft has reconsidered:</p>

<p>… make sure that you have removed all dependencies on the project that you are about to remove before you remove the project from the solution.</p>