[C++] Opaque Typedef library

video:
https://www.youtube.com/watch?v=jLdSjh8oqmE

library:
https://sourceforge.net/p/opaque-typedef/wiki/Home/#opaque-typedef-library

Reference:
Toward Opaque Typedefs for C++1Y, v2 (PDF)
[C++][NOTE][ORIGINAL] Strong typedef

Microprocessors have kinds of addresses:

• Virtual address
• Linear address
• Guest physical address
• Host physical address
• DDR address

What kind of address am I talking about?

Opaque typedef

Idea:

• Wrap a variable of some type in a new type
• Mimic the interface of the original type, but using the new type

code:

struct linaddr : numeric_typedef<uint64_t, linaddr>
{
 using base = numeric_typedef<uint64_t, linaddr>;
 using base::base;
}

Merit:

• Safer interfaces by removing implicit convertibility
• Makes overloading on the new type possible
• Turn semantic bugs into compile time errors

[C++][NOTE][ORIGINAL] Strong typedef

typedef does _not_ creates new type,

but sometimes, we really want _the_ same type but

with different _type_. Ok, it's a bit wordy.