returning different types via function

[Jesse Phillips]

On Tuesday, 19 November 2013 at 19:15:10 UTC, seany wrote:
> (so i want liek a C style fopen -like function, that , although 
> called with the syntax: file *f = fopen(balh, "bla"); can set f 
> to be false)

I think you have a misunderstanding here. C does not allow you to 
return "false." Instead C states that 0/NULL is false. Similarly 
D also considers null and 0 to be false inside a conditional 
(where in D's case those are two different values).

So yes, you can do the same in D, but since false, null, and 0 
are actually all different types and will not implicitly cast to 
the other.