Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hplabs!hp-pcd!hplsla!jima
From: jima@hplsla.HP.COM (Jim Adcock)
Newsgroups: comp.lang.c++
Subject: Re: disappointed with Pohl's C++ book
Message-ID: <6590240@hplsla.HP.COM>
Date: 8 Sep 89 17:37:02 GMT
References: <2293@hub.UUCP>
Organization: HP Lake Stevens, WA
Lines: 50

//>      The real restriction, according to Stroustrup, is that a static 
//>member of a class cannot be of a type which has a constructor.  Static
//>members are also forbidden initializers.  (At first thought this
//>seems strange.  After all, static members are really just global
//>variables to the implementation, and global variables can be of
//>a type with a constructor.  But think about what happens when a
//>class definition is included into several files.  Who does the
//>initialization?)
//>
//>					John Nagle

//------------------------------------------------

// Oops -- I just noticed in AT&T's 2.0 release notes pg 4-12 that static
// members of a class can now have constructors, and can be initialized.
// There are new syntaxes for doing so.  I haven't seen this info elsewhere:

#include <stdio.h>

class withConstructor
{
  static withConstructor classname;
  const char* stringp;
public:
  withConstructor(const char* p) { stringp = p; }
  void print() { printf("%s\n", stringp); }
  void printClassname() { printf("class name: "); classname.print();}
};

withConstructor withConstructor::classname("withConstructor");

class withStaticMember
{
  static withConstructor classname;
  int someMembers;
public:
  withStaticMember() : someMembers(1234) {}
  void printClassname() { printf("class name is: "); classname.print(); }
};

withConstructor withStaticMember::classname = "withStaticMember";

void main()
{
  withStaticMember someObject;
  someObject.printClassname();

  withConstructor anotherObject = "something";
  anotherObject.printClassname();
}