[Boost-users] A question on data change with lambda expression. Can any one with kindness help me?

Subject: [Boost-users] A question on data change with lambda expression. Can any one with kindness help me?
From: fmingu (fmingu_at_[hidden])
Date: 2009-07-10 07:19:20

I am using Dev-C++ and lambda expression.I wrote the following lines:
..................
typedef std::map<int, int> IIPrimemap;
IIPrimemap primemapvec;
.....................
 void a(){
   primemapvec[1]=3;
   bind(&IIPrimemap::value_type::second,(*bind(static_cast<IIPrimemap::iterator (IIPrimemap::*)()> (&IIPrimemap::end),var(primemapvec))))++;
   return;
}
....................
but after the program ran,
the primemapvec[1] is still 3, not 4.
I am puzzled about that.
How can I change primemapvec to 4 ?
Can anyone with kindness help me?