This is an experiment in different types of object modeling and APIs in C++. It is currently a work in progress.

The current set of objects are in a namespace Objects. The following classes are defined:

• Object - A base object type
• Class - A simple object for class-level information about objects
• Exception - A base class for exceptions
• Sequence - An abstract interface for list-like structures
• StaticArray - An immutable array
• Array - A modifiable array with a fixed length
• Vector - A modifiable array which can grow and shrink

The StaticArray, Array, and Vector classes also offer variants that allow an error value to be specified in place of exception throwing behavior when bounds are exceeded. This allows you do to things like:

void printContents(const Vector<int> list&) {
  VectorWithErrorHandling<int> items = list.withErrorHandling(-1);
  int item;

  while ((item = items.pop()) != -1)
    printf("got = %d\n", item);
}

The example is a contrived, but for some types which have an unambiguous difference between an empty and a non-empty value, that behavior can make for easier programming than dealing with exceptions.