elements in std::set

Hello

I have a simple

Code:

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std::set<object> someset;

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Where object is:

Code:

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class object {
public:
  void some_function() { }
};

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How can I call some_function() for all elements in set container with STD algorithms within one line?

Many thanks in advance!

http://www.cplusplus.com/reference/a.../for_each.html

Code:

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std::for_each( someset.begin(), someset.end(),
              boost::bind( &someset::some_function, _1 ) );

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Thanks a lot!

FYI, the non-boost way (I believe?) would be:

Code:

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std::for_each(someset.begin(),someset.end(),std::mem_fun_ref(&object::some_function));

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I could be a little off there...

Quote:

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Originally Posted by pheres

Code:

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std::for_each( someset.begin(), someset.end(),
              boost::bind( &someset::some_function, _1 ) );

---

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I've never used boost before, but are you sure that's right? someset is a set container so does &someset::some_function make sense if some_function is a member function of object? It just looks a little off.

ups, you are right:

Code:

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std::for_each( someset.begin(), someset.end(),
              boost::bind( &object::some_function, _1 ) );

---

does it work?

use mem_fun or mem_fun_ref with for_each:

Code:

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for_each(container.begin(), container.end(), mem_fun_ref( &object::some_function )  )

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Quote:

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Originally Posted by King Mir

use mem_fun or mem_fun_ref with for_each:

Code:

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for_each(container.begin(), container.end(), mem_fun_ref( &object::some_function )  )

---

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Can you pass function arguments with mem_fun ?

Let's say that some_function was a member function that accepted an integer as an argument... you could then do (as an example):

Code:

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std::for_each(someset.begin(),someset.end(),std::bind2nd(std::mem_fun_ref(&object::some_function),4));

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Which would effectively call the member function some_function(4) for each object in container someset... if I understand what you're asking.