[Python-3000] Making more effective use of slice objects in Py3k

[Ron Adam]

Josiah Carlson wrote:

> If views are always returned, then we can perform some optimizations
> (adjacent view concatenation, etc.), which may reduce running time,
> memory use, etc.  d

Given a empty string and a view to it, how much memory do you think a 
view object will take in comparison to the string object?

Wouldn't there be a minimum size of a string where it would be better to 
just copy the string?