Ruling out arbitrary cost copy construction?

[Andrei Alexandrescu]

On 10/29/10 12:18 CDT, dsimcha wrote:
> == Quote from Andrei Alexandrescu (SeeWebsiteForEmail at erdani.org)'s article
>> To recap:
>> 1. Arbitrary cost copy construction:
>> + Makes value types easy to define: just hook the copying code into
>> this(this)
>> + Is familiar to programmers coming from C++
>> + If it fails, fails early, not surprisingly during a later operation
>
> BTW, I don't see why failing during a variable assignment is any less bad than
> failing during any other seemingly innocuous operation.

One problem is that copying is often implicit and as such more difficult 
to see with the naked eye.

Andrei