Re: How to improve this

From:
Ebenezer <woodbrian77@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Sun, 11 Dec 2011 15:39:19 -0800 (PST)
Message-ID:
<d82570cb-7ca9-42f9-888c-c1bd3ba4e0a5@h18g2000yqg.googlegroups.com>
On Dec 11, 5:00 pm, "Asger Joergensen" <J...@Asger-P.dk> wrote:

Hi Ebenezer

Ebenezer wrote:

In the past I've asked for code review comments on the
code in the archive here --
http://webEbenezer.net/build_integration.html.

I didn't get a lot of response to that.


Do You really find that strange ???

Ask Your self if You, without any knowledge of the project, would start
investigating in response to a post like Yours.

If You want help / suggestions, You must post some specific code and then
ask if that can be improved.


Fortunately I have a specific question also that I posted
on another forum yesterday and haven't gotten a reply there.

class failure : public ::std::exception {
  flex_string<char> whatStr;

public:
  explicit failure (flex_string<char> const what_) : whatStr(what_)
  {}

  ~failure () throw()
  {}

  char const* what () const throw()
  { return whatStr.c_str(); }

  template <typename T>
  failure& operator<< (T val)
  {
    ::std::stringstream ss;
    ss << val;
    whatStr.append(ss.str().c_str());
    return *this;
  }
};

class eof : public ::std::exception {
  flex_string<char> whatStr;

public:
  explicit eof (flex_string<char> const what_) : whatStr(what_)
  {}

  ~eof () throw()
  {}

  char const* what () const throw()
  { return whatStr.c_str(); }
};

I thought of changing the second class, eof, like this:

class eof : public failure {

public:
  explicit eof (flex_string<char> const what_) : failure(what_)
  {}

  ~eof () throw()
  {}
};

That seems better, but two executables each become a couple
hundred bytes larger with that latter approach. The increase
in the size of the executables happens with g++ 4.5.1 and 4.6.2.
One question would be which version of eof would you use?
I'm inclined to stick with the original/longer version, because
the compilers I've checked handle it better.

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