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From: Alex Vinokur <alexvn AT bigfoot DOT com>
Newsgroups: comp.os.msdos.djgpp,comp.lang.c++
Subject: Re: Error with bind2nd() and ptr_fun()
Date: Thu, 07 Feb 2002 14:18:24 +0200
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David Hilsee wrote:

> <snip>
> > Here is a program and compilation results.
> >
> > The compiler detects some error
> >   and informs about "Internal compiler error".
> >
> > Is there an error in my program?
> >
> <snip>
> >   for_each(vect.begin(), vect.end(), bind2nd(ptr_fun(foo2), 200)); //
> > Line#53
>

[snip]

>
>
> This message pretty mch says it: you're forming a reference to a reference.
>
> The problem is that the binder that results from bind2nd tries to take the
> argument in its operator() (the first parameter of the function) by
> reference.  That parameter, in your code, is already a reference, and that
> makes it try to generate a reference to a reference, which isn't allowed.
>
>

[snip]

Thanks.


We can see that function
 void foo1 (AAA& a)  {a.set_value (a.get_value() + 100);}
can be used in for_each  ()

So, what about
void foo2 (AAA& a, int n) { a.set_value (a.get_value() + n); } ?

Is there any way to do what I want to ?

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