Re: mpl::if_ or mpl::apply_if?

From: Markus Werle (yg-boost-users_at_[hidden])
Date: 2003-02-25 03:49:59

David Abrahams wrote:

> Markus Werle <yg-boost-users_at_[hidden]> writes:

>> Q3: (OT) Is there a mpl-equivalent to run-time case?
> 
> :-)
> 
> Aleksey and I have been discussing some shorthands for
> 
>   if (c1) then t1
>   else if (c2) then t2
>   else if (c3) then t3
>   ...
>   else if (c4) then t4
> 
> but that's not quite the same as a case statement.

A std::map equivalent would help here a lot.
It should be possible to search within a typelist of 
std::pair<condition, type> ...
Unfortunately I am still stumbling through the mpl
source [getting mad about all those  
WORKAROUND_FOR(STUPID_COMPILER_VENDOR)]

Could You please give me an idea how to 
search within such a typelist?

Markus