title: Does go provide variable sanitization?
body: <p>I am a beginner in Golang.
  I have a problem with variable type assigning from user input.</p>
  
  <p>When the user enters data like <code>"2012BV352"</code> I need to be able to ignore the <code>BV</code> and pass <code>2012352</code> to my next function.</p>
  
  <p>There has a package name <code>gopkg.in/validator.v2</code> in doc</p>
  
  <p>But what it returns is whether or not the variable is safe or not.</p>
  
  <p>I need to cut off the unusual things.</p>
  
  <p>Any idea on how to achieve this?</p>