Returns NULL when using a template in C ++

Question

If I have an interface as shown below:

template <typename V, typename K>
V get(K key);  // Return the value of the key 

Does it make sense to "return NULL when the key is not found"? Is there a way to handle the case when the key is not found, except for an exception exception?

Also throwing an exception is the best way to handle a non-existent key?

Answer 1

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