title: How to update to C++11?
body: <p>I am new to programming, so have never experienced a language update. With the release of C++11, I want to make use of all the new features such as lambda expressions and threads. I know I can do this with external libraries but using native language features would be more convenient.</p>
  
  <p>I am using gcc 4.2.1 on Mac OS X Snowleopard in Xcode 3.2.6</p>
  
  <p><strong>What all do I need to do and update to start using C++11 features?</strong></p>