What are some common templates in the C++ Standard Library?

What are some common templates in the C++ Standard Library?

The C++ Standard Library includes several common templates like std::vector, std::list, and std::map. These templates provide dynamic array, linked list, and associative array functionalities respectively.

Can you explain how std::vector works?

Sure! std::vector is a dynamic array that can resize itself automatically when elements are added or removed. It provides random access to elements and is implemented as a contiguous block of memory.

What are the advantages of using std::map?

std::map is an associative container that stores elements in key-value pairs. It allows for fast retrieval of values based on keys, maintains order, and automatically handles duplicates by keeping only unique keys.

Are there any performance considerations I should be aware of?

Yes, performance can vary based on the container used. For example, std::vector is generally faster for sequential access, while std::map has logarithmic time complexity for insertions and lookups due to its underlying tree structure.