title: Dart dynamic class loading
body: <p>I want to build an application server with Dart. The httpServer in the dart:io library is certainly a good starting point for that. But I struggle with the task to "deploy" an application without restarting the server process.</p>
  
  <p>To be more precise: I want to have something like a servlet container in Java, like Tomcat, into which I can easily deploy or redeploy an application without restarting the container. I thought I could utilize the mirror system, which allows me in principle to load a library and its contained classes from the filesystem. But unfortunately it seems that I cannot re-load the library. When I add for example a new class to the library, or change the coding of an existing class, a new reflection of the library without restarting the dart process, does not reflect the changes. Only when I stop the process and restart it again, the changes are visible.</p>
  
  <p>So: is there a way to scrub the mirror system and let it load the library and its classes again, within the same Dart process? </p>