Re: [boost] [MPL] true_type,false_type versus true_,false_

Subject: Re: [boost] [MPL] true_type,false_type versus true_,false_
From: Edward Diener (eldiener_at_[hidden])
Date: 2014-01-04 02:15:31

On 1/3/2014 5:35 PM, Erik Erlandson wrote:
> I've been using true_type and false_type in some of my interfaces, for example:
> https://github.com/erikerlandson/edit_distance/blob/master/include/boost/algorithm/sequence_alignment/edit_distance.hpp#L62
>
> However it seems as though true_ and false_ are more compatible with MPL logic functions.  Is there any particular reason to use one over the other?   Would it be preferable to use true_ and false_?

Since true_type and false_type in type traits are derived from true_ and 
false_ in MPL, you are fine using them if you have to interoperate with MPL.