[Boost-users] BOOST_STRONG_TYPEDEF

From: gast128 (gast128_at_[hidden])
Date: 2005-02-07 16:43:25

Dear all,

I was playing with the serialization library, and ran into the 
BOOST_STRONG_TYPEDEF. In our own development environment we have a similar 
feature based on the article 'True typedefs' from Matthew Wilson (CUJ march 
2003):

BOOST_STRONG_TYPEDEF(long, HBLA);
BOOST_STRONG_TYPEDEF(long, HBLUB);

HBLABLA hBla(1);
HBLUB   hBlub(3);
bool    bOk = false;

bOk = (hBlub == hBla);  //rejected if base types are different
bOk = (hBlub != hBla);  //does not compile on VC 7.1
bOk = (hBlub < hBla);   //rejected if base types are different

hBlub = hBla;           //accepted by boost_strong_typedef, this is a 
deliberate choice

So I guess one can discuss about some behavior. 

But perhaps if it supports '==', it should also support '!='?

Wkr, 
me