Map in C++ with practical examples - step by step Data Structures tutorial

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In modern C++ a map is data collection that stores elements in the form of key-value pairs. In some other languages (C#, Java, JS, Python,...), this type of collection is also known as a dictionary.
Key has to be unique and of a simple data type, like a string or a number.
Value doesn't have to be unique and it can be a simple or a complex data type (like a structure, list, another map, etc).

An important characteristic of the map collection is that it orders elements by key in ascending order (a, b, c, d,... or 1, 2, 3, 4,...)
This ordering works very fast and it is available out of the box, so you don't have to do anything for this to work.
Another similar collection is unsorted_map, and the only difference is that it doesn't sort its elements by a key.

In this video you'll learn how to use map data collection, when to use map data collection and we'll build two apps together that will help you understand this concept better.

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