Re: [boost] null

From: Bo Persson (bop_at_[hidden])
Date: 2005-07-29 07:00:25

"Jason Hise" <chaos_at_[hidden]> skrev i meddelandet 
news:42E9A2B1.4020407_at_ezequal.com...

> Why does the C++ language have to ban such potentially fun things as
> infinite implicit conversion chains and overloading the dot operator?

Because it would force the compiler to create conversion chains thru any 
unrelated types, that just happen to be present. Combine that with 
overload resolution, C style type promotions, and templates, and you 
have got what? A real mess!

struct x
{
   operator int();
};

struct y
{
};

Here, an x isn't convertible to a y. Good!

struct z
{
    z(int);
   operator y();
};

Now they would be!

Bo Persson