"arrow">&#45;&gt;</span></span> <span><span class="type-var">'b</span> <span class="arrow">&#45;&gt;</span></span> unit )</span> <span class="arrow">&#45;&gt;</span></span>
  <span><span class="type-var">'b</span> <span class="arrow">&#45;&gt;</span></span>
  <span class="type-var">'a</span></span></code></div><div class="spec-doc"><p><code>task_progress ~f pp x</code> executes <code>f</code> and log progress <code>pp x</code> in the log file and also on the console unless there is an active task bar</p></d