How to handle an “infinite” IEnumerable?

Question

A trivial example of an \"infinite\" IEnumerable would be

IEnumerable Numbers() {
  int i=0;
  while(true) {
    yield return unchecked(i++);
  }
}
         


        

Answer 1

Yes, your code will always work without infinite looping. Someone might come along though later and mess things up. Suppose they want to do:

var q = Numbers().ToList();

Then, you're hosed! Many "aggregate" functions will kill you, like Max().