std::multimap

Extending the principles of std::map, the std::multimap container allows for one key to be associated with multiple values. It’s like a dictionary where a word might have several related definitions.

Purpose and suitability

std::multimap is an associative container within the STL. Its distinguishing features are as follows:

• Storing key-value pairs
• Allowing multiple values with the same key
• Storing elements in a sorted manner, as determined by the key

It’s particularly suitable in the following scenarios:

• When you need to maintain a collection with non-unique keys
• When you want sorted access based on keys
• When key-value mapping is paramount

Choose std::multimap when you expect multiple values under the same key. If unique keys are necessary, you might want to look into std::map.

Ideal use cases

The following are some ideal use cases of std::multimap:

• Multiple entries per key: Consider a business...