explicit castable to bool for predicate restraints?

[monarch_dodra]

On Tuesday, 18 December 2012 at 10:08:12 UTC, Jonathan M Davis 
wrote:
>
> We're probably stuck with std.algorithm allowing implict 
> conversions to bool
> due to the fact that a fair bit of it has accepted that for a 
> while, but
> accepting anything which explictly casts to bool would be 
> tantamount to
> turning explicit casts into implicit casts and would be very 
> dangerous.
>
> [SNIP]
>
> - Jonathan M Davis

Hum...

For now, I'll simply remove the newly enforced restrictions then, 
as it may break existing code.

I'll put in more thinking before doing anything else.