Re: [Boost-users] How to use bind with explicit constructor conversion?

20 Nov 2006

      Terry G wrote:
...
This doesn't compile.
How best to accomplish this using generic STL or Boost
algorithms/adapters?
IIRC, you'll need to use boost lambda facilities: 
http://www.boost.org/doc/html/lambda/le_in_details.html#lambda.construction_...

or boost::spirit::phoenix. Sorry I don't have a link for this one.

Or use the techniques below:
...
terry
#include <iostream>
#include <iomanip>
#include <algorithm>
#include <vector>
#include <iterator>
#include <cstdlib>
#include 
#include 
using namespace std;
using namespace boost;
class MyInt {
 int _value;
public:
 explicit MyInt(int x=0) : _value(x) { }
 int value() const { return _value; }
static Construct(int x=0){ return MyInt(x); }
...
}; // MyInt
int main() {
 vector<MyInt> v;
// Do this:
 //   for (int i=0; i!=30; ++i) v.push_back(MyInt(rand()));
 generate_n(back_inserter(v), 30, bind(MyInt, bind(rand)));
generate_n(back_inserter(v), 30, bind(&MyInt::Construct, bind(rand)));
...
// Now print v.
 transform(v.begin(), v.end(), ostream_iterator<int>(cout, "\n"),
     mem_fn(&MyInt::value));
return 0;
} // main
Jeff Flinn