Re: [Boost-users] Sequence of Types, What For?

From: Peter Dimov (pdimov_at_[hidden])
Date: 2006-10-17 14:40:25

Terry G wrote:
> I've just finished reading C++ Template Metaprogramming again.
> I just don't get it.
>
> Why would someone use a type container?

Imagine a case where for some reason you would like to call

register<X, Y>();

for all combinations of X1..Xm and Y1..Yn. Writing the calls by hand gets 
tedious. If you put Xi and Yi in type sequences, you can write a metaprogram 
that generates the calls.