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I have a Dictionary<int, Product>. If the same Product is added to more than one key is an new instance of that object stored for each key? Or just a reference to the original object?
This collection is very large and each product will have between 1-10 Keys to it. My primary concern is memory allocation.
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It is a class hence it is a Reference Type.
In Swift, Array, String, and Dictionary are all value types. They behave much like a simple int value in C, acting as a unique instance of that data.
A dictionary, also called an associative array, is a collection of unique keys and a collection of values, where each key is associated with one value. Retrieving and adding values is very fast. Dictionaries take more memory because for each value there is also a key.
In C#, Dictionary is a generic collection which is generally used to store key/value pairs. The working of Dictionary is quite similar to the non-generic hashtable. The advantage of Dictionary is, it is generic type. Dictionary is defined under System.
If Product is a reference type (class and not struct), only a reference will be stored.
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