title: Evaluate formula in Go
body: <p>Using Go (golang) I'd like to take a string with a formula and evaluate it with pre-defined values. Here's a way to do it with python's <code>parser</code> module:</p>
  
  <pre><code>x = 8
  code = parser.expr("(x + 2) / 10").compile()
  print eval(code)
  # prints 1
  </code></pre>
  
  <p>Any idea how to do it with Go?</p>