Re: [Boost-bugs] [Boost C++ Libraries] #7145: rational.hpp - Avoid repeated construction

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7145: rational.hpp - Avoid repeated construction
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-08-20 11:30:44

#7145: rational.hpp - Avoid repeated construction
-----------------------------------------+----------------------
  Reporter:  Dan Searles <dansearles@…>  |      Owner:  turkanis
      Type:  Bugs                        |     Status:  new
 Milestone:  To Be Determined            |  Component:  rational
   Version:  Boost 1.51.0                |   Severity:  Problem
Resolution:                              |   Keywords:
-----------------------------------------+----------------------

Comment (by dlwalker):

 When a class template's instantiation is hidden behind a `typedef`/type-
 alias, its template parameters are a pain to get.  That's why it's
 customary for template classes to provide means to get its parameters
 within themselves.  That means member type-aliases for type-based
 parameters and constants or static member functions for value-based
 parameters.  (Maybe the new C++11 templated `using` can be used for
 template-based parameters?)

 Maybe I should go the other way; use `int_type` for member function
 definitions, and `IntType` only within non-member functions.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7145#comment:1>
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