Added generic iterator

src/container/iterator.hpp

@@ -0,0 +1,31 @@
+#pragma once
+
+namespace gz {
+
+/**
+ * @brief A generic iterator that satisfies std::forward_iterator
+ */
+template<typename T>
+struct Iterator {
+    public:
+        using value_type = T;
+        Iterator() : ptr(nullptr) {};
+        Iterator(T* ptr) : ptr(ptr) {};
+        T& operator*() const { return *ptr; };
+        Iterator& operator=(const Iterator& other) {
+            ptr = other.ptr;
+            return *this;
+        };
+        Iterator& operator++() { ptr += sizeof(T); return *this; };
+        Iterator operator++(int) { auto copy = *this; ptr += sizeof(T); return copy; };
+        friend int operator-(Iterator lhs, Iterator rhs) {
+            return lhs.ptr - rhs.ptr;
+        };
+        bool operator==(const Iterator& other) const { return ptr == other.ptr; };
+        // bool operator!=(const Iterator& other) const { return ptr != other.ptr; };
+    private:
+        T* ptr;
+}; // Iterator
+
+/* static_assert(std::forward_iterator<Iterator<int>>, "Iterator not a forward range."); */
+} // namespace gz