title: How to clear ghci's function result cache?
body: <p>GHCI seems to cache the results of functions during an interactive session. It's easy to notice, just call a time-consuming function twice. On the second time, the result will appear immediately.</p>
  
  <p>Is there a way to clear this cache from within GHCI so I don't have to restart it? I'm doing some quick'n'dirty non-detailed performance comparisons, so using System.CPUTime instead would be overkill.</p>