title: Is the format of GUID always the same?
body: <p>GUID you get something like aaaef973-d8ce-4c92-95b4-3635bb2d42d5</p>
  
  <p>Is it always the same? Is it always going to have the following format</p>
  
  <p>8 char "-", 4 char "-", 4 char "-", 4 char "-", 12 char</p>
  
  <p>I'm asking because i need to convert a GUID without "-" to GUID with "-" and vice visa.</p>