bvsatyaram/Ruby-Data-Structures — pull request #1 by kristianmandrup (2012-11-05 11:29:22+00:00)
Title: Some improvements, including a useful FIFO stack and "factory" macros

I needed the FIFO stack in order to implement history, where the oldest elements on the stack are removed to give room to the latest element. Used in my case for a stack of previous search criteria in the User session.