title: How to generate a random alphanumeric string with Erlang?
body: <p>I'm trying to generate an random alphanumeric ID with Erlang.
  I naively tried <code>crypto:strong_rand_bytes(Bytes)</code> to generate a random binary and then used that binary like it was created with <code>&lt;&lt;"my_unique_random_id"&gt;&gt;</code> - which didn't work because random bits are not necessarily a valid UTF-8 string, right?</p>
  
  <p>Well, I looked for other options in the erlang docs and elsewhere, but I didn't find anything. Could someone point me to a solution?</p>