Using bind to call a member function
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?
On 3/14/06, Rob Caldecott
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
participants (2)
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Rob Caldecott -
Stuart Dootson