title: Most efficient way to store a string in bytes?
body: <p>Say I have a simple bytecode-like file format for saving data.<br>
  If I want to store a string, should I do it like in source files where all characters between a certain byte is the string,<br>
  or should I first store the length of the string then the string bytes?</p>
  
  <p>Or are both solutions horrible and if so which one can I use?</p>