Exercises

1. What happens at compile time if you try to create a uint8 a value outside of its range, e.g., uint8(-1) or uint8(1024)?

2. What happens at runtime if you perform an operation which leaves the domain of an integer value, e.g.,

   global x = 0;
   print x - 1;
   
   global y: uint8 = 255;
   print y + 1;
   
   global z = 1024;
   print cast<uint8>(z);
   
   print 4711/0;
   

3. What happens at compile time if you access a non-existing tuple element, e.g.,

   global xs = tuple(1, "a", b"c");
   print xs[4711];
   
   global xs: tuple<first: uint8, second: string> = (1, "a");
   print xs.third;
   

4. What happens at runtime if you try to get a non-existing vector element, e.g.,

   print vector(1, 2, 3)[4711];
   

5. What happens at runtime if you try to dereference an invalidated iterator, e.g.,

   global xs = vector(1);
   global it = begin(xs);
   print *it;
   xs.pop_back();
   print *it;
   

6. Can you dereference a collection's end iterator?

7. What happens at runtime if you dereference an unset optional?