References in D

[Peter Alexander]

On Saturday, 15 September 2012 at 23:34:44 UTC, Jonathan M Davis 
wrote:
> On Saturday, September 15, 2012 16:29:32 Walter Bright wrote:
>> I wouldn't worry about it. I suspect that most C++ programmers 
>> think that
>> references cannot be null. C++ is a complex language, and 
>> invites
>> assumptions about it that are not so.
>
> It's stuff like that that makes it so that I'll probably never 
> claim that I'm
> an expert in C++ even though I'm probably one of the more 
> knowledgeable about
> it where I work. Even if you think you know it really well, 
> there's always
> _something_ that you miss.
>
> - Jonathan M Davis

My favourite C++ wtf:

struct Foo
{
     template <int x, int y> int fun(bool c) { return c ? x : y; }
};

struct Bar
{
     int fun;
};

template <typename T>
int madness()
{
     return T().fun<1, 2>(true);
}

The WTF: madness<Foo> doesn't compile, but madness<Bar> does 
(with a warning).