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I have:
void add_all_msgs(std::deque<Message>::iterator &iter);
How can I make that function "generic", so it can take any kind of inputiterators ? I don't really care if it's iterating a deque,a vector or something else, as long as the iterator is iterating Message's. - is this at all straight forward possible in c++ ?
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An iterator is an object that allows you to step through the contents of another object, by providing convenient operations for getting the first element, testing when you are done, and getting the next element if you are not. In C, we try to design iterators to have operations that fit well in the top of a for loop.
Iterators are one of the four pillars of the Standard Template Library or STL in C++. An iterator is used to point to the memory address of the STL container classes. For better understanding, you can relate them with a pointer, to some extent.
An iterator is used to move thru the elements an STL container (vector, list, set, map, ...) in a similar way to array indexes or pointers. The * operator dereferences an iterator (ie, is used to access the element an iterator points to) , and ++ (and -- for most iterators) increments to the next element.
An iterator is an object that can iterate over elements in a C++ Standard Library container and provide access to individual elements.
template <typename Iterator>
void add_all_messages(Iterator first, Iterator last)
usage :
vector<message> v;
add_all_messages(v.begin(), v.end());
You need to specify the end, otherwise you won't know when to stop! It also gives you the flexibility of adding only a subrange of a container.
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