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NNTP-Posting-Date: Thu, 01 Mar 2012 12:07:13 -0600
From: Gareth Owen <gwowen@gmail.com>
Newsgroups: comp.lang.c++
Subject: Re: #include and namespaces
References: <8266241.1084.1330590876018.JavaMail.geo-discussion-forums@vblb5> <jinri9$cet$1@dont-email.me> <jioc5q$h5i$1@dont-email.me>
Date: Thu, 01 Mar 2012 18:07:31 +0000
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Xref: csiph.com comp.lang.c++:14656

yatremblay@bel1lin202.(none) (Yannick Tremblay) writes:

> However what are peoples opinion of specific using directives in
> headers, e.g.: "using std::string;".  Should they be absolutely
> rejected as with "using namespace" or is there any situation under
> which they are tolerable?


frob.hpp
--------
std::vector<std::string> tokenize(const std::string&);


frob.cpp
--------

std::vector<std::string> tokenize(const std::string& in)
{
  using std::string; 
  using std::vector;
  
  vector<string> tokens;
  while(something) {
     string tmp1 = foo(in);
     string tmp2 = bar(in);
     vector<string> parts;
     tokens.push_back(etc....);
     // more code     
     // ....
  }

  return tokens;
}

I can't see why that should be even slighty intolerable...