Re: [Boost-bugs] [Boost C++ Libraries] #12136: Propose lexical_cast type traits

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #12136: Propose lexical_cast type traits
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-04-19 14:38:47

#12136: Propose lexical_cast type traits
  Reporter: Tony Lewis | Owner: apolukhin
  <tonyelewis@…> | Status: new
      Type: Feature Requests | Component: lexical_cast
 Milestone: To Be Determined | Severity: Optimization
   Version: Boost 1.61.0 | Keywords:
Resolution: | lexical_cast,trait,ostreamable,istreamable,lexical_castable

Comment (by Tony Lewis <tonyelewis@…>):

 Thanks for detection idiom pointer - look interesting.

 Thanks for suggested implementation.

  * Though people technically ''can'' implement their own trait code (like
 your suggested implementation), they probably ''shouldn't'' because,
 AFAIA, the library doesn't present this expression as part of it's
 interface, ie using it means depending on the library's internals. Unless
 the library's public documentation can guarantee that this expression is
 guaranteed to remain correct, this functionality is best provided by the
 library so it can insulate users' code from changes to the internals.
  * I wholeheartedly agree that `lexical_cast`'s simple interface is one of
 its strengths. That said, I think the proposed traits would add very
 little complexity and could be kept to a corner of the documentation so
 they don't confuse new users.

 Thanks very much.

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