title: Why is there no unsized Integer type?
body: <p>Why does the STL not contain an unbounded integer data type?</p>
  
  <p>I feel like it's a data type whose purpose is similar to that of a string.<br>
  Programmers would not have to worry about overflowing values and could work with much larger numbers.  </p>
  
  <p>So I'm curious if there is a specific reason for it's absence.  </p>
  
  <p>This isn't an issue on how to implement or use one from a 3rd party library, 
  but just a question as to why the language doesn't already come with one. 
  Any links on the matter are appreciated.</p>