Ruby implementation of multiset and multimap. Unlike ordinary set(see 'set' library in Ruby), multiset can contain two or more same items. And unlike ordinary map (i.e. 'Hash' in Ruby), multimap can contain two or more items for one key.

• Development Status: 4 - Beta
• Intended Audience: Developers
• License: BSD License
• Natural Language: English, Japanese
• Operating System: OS Independent
• Programming Language: Ruby
• Topic: Mathematics