Bimap (a map allowing access both by key and value). It therefore implies uniqueness of (key, value) pairs. Two versions are defined, unordered_bimap and bimap (based on STL unordered_map and map respectively). Bimap allows iteration of keys and of values. (bimap also sorts keys and values and allows reverse iteration).

• #include "bimap.h" and have fun.
• test.cpp shows all available operations on both bimap versions.