Re: double pointer issue....const-correctness

From:

puzzlecracker <ironsel2000@gmail.com>

Newsgroups:

comp.lang.c++

Date:

Thu, 19 Mar 2009 14:24:48 -0700 (PDT)

Message-ID:

<7ff823b9-6715-40dc-aee3-b645bf6b17b7@y13g2000yqn.googlegroups.com>

On Mar 19, 4:47 pm, "Alf P. Steinbach" <al...@start.no> wrote:

* puzzlecracker:

The code fails to compile: why?

can't figure out how to fix it....

std::map<string, const Foo*> m;

This maps strings to pointers.

//assign to pFoo if it is in the map
bool TryToAssign(int i, const Foo* & pFoo) /*fails to compile*/
{
std::map<int , const Foo* >::const_iterator iter=m.find(i);

This tries to find an integer.

  if(iter!=m.end())
    pFoo=iter->second;
  else
     return false;
   return true;

}

void Test()
{
   const Foo* f;
   if(TryToAssign(6, f))
     cout<<"SUCCESS... =F5=F2=E1\n";

}

Cheers & hth.,

- Alf

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to it is even better! Thanks in advance!

sorry there was an integer there, it is typo.