title: C++ IDE search within specific namespace
body: <p>Sometimes there is a huge library and I really cannot find stuffs inside. For example I need too find <code>func1</code> nested in heuristic namespaces. Is there any IDE for C++ in Linux environment to help me find such expression?</p>
  
  <pre><code>ns1::ns2::ns3::func1
  </code></pre>
  
  <p>Unfortunately many IDEs search based on Regex and cannot distinguish it from <code>ns4::ns5::ns6::func1</code> .</p>
  
  <pre><code>namespace ns1
  {
      namespace ns2
      {
  
          namespace ns3
          {
              void func1()
              {
  
              }
          }
      }
  }
  </code></pre>