How to write iterators c

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They are primarily used in the sequence of numbers, characters etc. It is like a pointer that points to an element of a container class e. If we want to make it work, iterators have the following basic operations which are precisely the interface of ordinary pointers when they are used to iterator over the elements of an array. Depending upon the work, an iterator can be categorized into 5 types, they are:. The above function is used to return the beginning position of any container.

STL Iterators

Const vs Regular iterators in C++ with examples - GeeksforGeeks

Skip to content. Related Articles. Last Updated : 18 Aug, Prerequisite: Iterators in STL Iterators are objects similar to pointers which are used to iterate over a sequence and manipulate the container elements.

Iterators (C#)

As an abstract algorithm this is clear, but can we implement it without specifying what kind of sequence we are dealing with? A range is the standard STL way to specify a sequence. Most STL algorithms take a range as an argument.
Iterators can be smart pointers which allow to iterate over the complex data structures. A Container provides its iterator type. Therefore, we can say that the iterators have the common interface with different container type.
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