title: how do you write the code for mybind
body: <p>I found this code in a book, how do you write or define the code for <strong>mybind</strong></p>
  
  <pre><code>var concat = function(a, b) { return a + " " + b;}
  var good = mybind(concat, "good");
  good("night") == "good night"
  </code></pre>