Thoughts on new vs traditional idioms

[Peter Otten]

Delaney, Timothy C (Timothy) wrote:

[unrelated code snipped]

>> Assuming all immutable classes are "smart enough":

[... to reuse an instance of the exact class passed to their copy
constructor - to use C++ terminology for lack of any better] 

> That's a *very* big assumption - one I would never make.

Do you have a class with immutable instances handy where the following
assertion fails?

assert immutableObj.__class__(immutableObj) is immutableObj

Peter