[Boost-users] MPL newbie : what is the difference between mpl::true_ and true_type

Subject: [Boost-users] MPL newbie : what is the difference between mpl::true_ and true_type
From: Linh Ha (lha_at_[hidden])
Date: 2012-01-31 05:20:50

I'm a newbie for both boost and MPL. My question is regarding about the 
differences between mpl::true_ and true_type. While from my point of 
view they are both structure of constant boolean. Even in the 
implementation true_type is derived from mpl:true_. So why we need both 
data structure instead of only single one. When we should use mpl::true_ 
instead and true_type and vice versa

Thanks