Re: DIP 1018--The Copy Constructor--Formal Review

[Olivier FAURE via Digitalmars-d-announce]

On Thursday, 28 February 2019 at 01:42:13 UTC, Andrei 
Alexandrescu wrote:
Such sharing of resources across objects is a common 
occurrence, which would be impeded by forcing `const` on the 
right-hand side of a copy. (An inferior workaround would be to 
selectively cast `const` away inside the copy constructor, 
which is obviously undesirable.) For that reason this DIP 
proposes allowing mutable copy sources.

There's an argument to be made that a copy constructor isn't the 
best way to share resources between two variables in a way that 
might affect code using the variable being copied.