title: How to remove the new line characters from a string?
body: <p>I want to remove all the newline symbols:</p>
  
  <pre><code>aaa = """
  fdsfds fdsfds
    fdsfdsfds
  fdsfdsfds
  """ |&gt; String.strip("\r\n")
  </code></pre>
  
  <p>And I get:</p>
  
  <pre><code>argument error
  </code></pre>
  
  <p>What's wrong with this?</p>