string <-> null/bool implicit conversion

[Timon Gehr via Digitalmars-d]

On 08/21/2015 01:43 PM, Steven Schveighoffer wrote:
> null is technically a no-type placeholder (defaulting to void * without
> context).

It now defaults to typeof(null), which is a distinct type from void*.
The same is confusingly not true for [] though, which still defaults to 
void[].