title: string manipulation in Dart / flutter
body: <p>I am parsing an RSS feed that 
  returns has the title in this format:</p>
  
  <pre><code>&lt;title&gt;Some Data with spaces  / Bahnofstrasse 22&lt;/title&gt;
  </code></pre>
  
  <p>so the first thing I did is to replace the spaces with a + </p>
  
  <pre><code>String result = _items[index].title.replaceAll(new RegExp(r"\s+\b|\b\s"), "+");
  </code></pre>
  
  <p>however, what I need to do is to select only the text after the / so in this case Bahnofstrasse 22, remove the spaces and add a city (e.g. Zurich) before the address so the desired results would be</p>
  
  <p>Zürich,Bahnofstrasse,22</p>
  
  <p>so essentially select all text after /, add Zurich and replace spaces with ,</p>