What are the best practices for using maps in C++11?

What are the best practices for using maps in C++11?

When using maps in C++11, consider using std::unordered_map for faster lookups, unless you need ordered keys.

Can you explain the difference between std::map and std::unordered_map?

Sure! std::map is ordered and uses a binary tree, while std::unordered_map is faster for lookups and uses a hash table.

What are some common pitfalls to avoid when using maps?

Common pitfalls include not handling key collisions in unordered_map and not considering the performance implications of copying large maps.

How can I iterate over a map efficiently?

You can use range-based for loops in C++11 to iterate over maps efficiently, which improves readability and performance.