title: What is ((->) t ) in haskell?
body: <p>I am doing <a href="http://blog.tmorris.net/posts/20-intermediate-haskell-exercises/">20 intermediate Haskell exercises</a>. </p>
  
  <p>After finishing first 2 exercise there is this strange thing. </p>
  
  <p>I would like to know what is <code>((-&gt;) t)</code>? </p>
  
  <pre><code>-- Exercise 3
  -- Relative Difficulty: 5
  instance Fluffy ((-&gt;) t) where
    furry = error "todo"
  </code></pre>
  
  <p>Thanks! :-) </p>