Re: [Boost-users] Using bind to call a member function

14 Mar 2006


      On 3/14/06, Rob Caldecott  wrote:
...
Greetings,
Is it possible to use boost::bind in a for_each loop to call a member of the
class that is making the call?  For example:
class CTest
{
public:
    void SomeFunc(const std::wstring& str) const
    {
        // Do something with str
    }
void DoSomething() const
    {
        std::vectorstd::wstring v;
        v.push_back(L"test");
        ...
        for_each(v.begin(), v.end(), bind(&CTest::SomeFunc, _1));
    }
};
Obviously the above will not compile - and I'm pretty sure that somewhere in
the bind, "this" will need to be passed, but I am struggling to make this
work.  I know I could use a static member function or use a function object
and pass it "this", but I wondered if there is a way to cut out the
middle-man and call a member function directly in this way?
You certainly can - add 'this' as the first bound parameter, like so:

for_each(v.begin(), v.end(), bind(&CTest::SomeFunc, this, _1));

HTH
Stuart Dootson