DIP 52 - Implicit conversions

[Max Klyga]

On 2013-12-11 12:44:29 +0000, Simen Kjærås said:

> http://wiki.dlang.org/DIP52
> 
> Abstract:
> Implicit conversion to and from other types are useful, and is to some 
> extent covered by existing language features. Some cases are currently 
> not covered, but could be worthy additions to the toolbox.
> 
> I've tried to figure out good ways to add some sorely-needed implicit 
> conversions to the language, but I'm sure there are details that need 
> to be ironed out. In other words - destroy!

Although implicit conversions have some usecases, genrally they cause 
more damage then help.

One could use suggested mechanism for defining 
covariance/contravariance for user types, but it would be too adhoc and 
fragile.