title: Visual studio - f# - Error FS0588 : Block following this 'let' is unfinished. Expect expression
body: <p>i have got several times , trying to implement different functions, the message you see as title. I would like to know if anyone can tell me the general meaning (and reason) of this error message. As i mentioned before, i have got the problem several times and manage to fix it, but still didnt get the exact reason, so i will not post any specific code.</p>
  
  <p>Thank you in advance</p>