In computer science, a bidirectional map is an associative data structure in which the pairs form a one-to-one correspondence. Thus the binary relation is functional in each direction: each can also be mapped to a unique . A pair thus provides a unique coupling between and so that can be found when is used as a key and can be found when is used as a key.
- Cablemodem.fibertel.com.ar (archived version)
- BiMap in the Google Guava library
- bidict (bidirectional map implementation for Python)