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c++listiterator

In this C++ code, what element of the list does the iterator refer to?

Here is the code:

listOfFoos::iterator new_foo_it = listOfFoos.insert(listOfFoos.end(),newFoo);

listOfFoos is just that, a std::list of foo objects. Normally you would write:

listOfFoos::iterator new_foo_it = listOfFoos.begin();

I also understand that the list.insert() will insert a newFoo at the specified index, then the iterator will be created. But I don't know how the insert affects the iterator's position.

Solution

  • It is well documented in the manual.

    An iterator that points to the first of the newly inserted elements.

    In you case new_foo_it after listOfFoos.insert of a single element, points to the last element of the list, it points newFoo.