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Data structures allow you to store and work with data. Common data structures include arrays, associative arrays, etc.
General Info: Pointers / ReferencesA pointer is a variable type that allows you to refer indirectly to another object. Instead of holding data, a pointer holds the address to data -- the address of another variable or object. You can change the address value a pointer points to thus changing the variable or object the pointer is pointing to. A reference is a type of pointer that cannot change and it must always point to a valid storage (no nulls). |
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