Syntax
#include <unordered_map>
std::unordered_map<std::string, int> cache;Examples
C++ std::unordered_map example
A focused example you can adapt while practising.
#include <unordered_map>
std::unordered_map<std::string, int> cache;Best practices
- Start with the smallest working example, then adapt it to your project.
- Use the language’s standard library and idioms before introducing extra dependencies.
At a glance
- Purpose
- Systems and general-purpose software
- File extension
- .cpp · .hpp
- Runs in
- Compiled native applications
- Usually used with
- Compiler and standard library
Specifications & further reading
Related C++ documentation
C++ Vector & Map
std::vector is a resizable sequence container. std::map stores key-value pairs ordered by key. Both are available through standard-library headers.C++ std::array
C++ reference for c++ std::array.C++ std::vector
C++ reference for c++ std::vector.C++ std::map
C++ reference for c++ std::map.
std::vector is a resizable sequence container. std::map stores key-value pairs ordered by key. Both are available through standard-library headers.C++ std::array
C++ reference for c++ std::array.C++ std::vector
C++ reference for c++ std::vector.C++ std::map
C++ reference for c++ std::map.