Re: [boost] PR: Remove safe_bool idiom from boost.tribool

On 5/18/18 10:55 PM, degski via Boost wrote:

On 19 May 2018 at 00:17, Robert Ramey via Boost wrote:

...

The motivating concept behind tribool is that of some sort of "extended" bool. The naming suggests that it acts like a bool.

I would submit that the name is wrong. From the introduction: " The 3-state boolean library contains a single class, boost::logic::tribool https://www.boost.org/doc/libs/1_67_0/doc/html/boost/logic/tribool.html, along with support functions and operator overloads that implement 3-state boolean logic." Boolean logic has 2 states, the latter part of the quote is a contradiction in terms. Other logic "systems" are applicable: https://en.wikipedia.org/wiki/Three-valued_logic

degski

Well the word "tribool" may not be defined on the wikipedia page, but it seems pretty clear to most of what is intended - logic based on true, false and indeterminant. I don't think renaming things is going to help things - although it would create a ton work. Robert Ramey