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Re:Ruby is too slow for programming competitions by pak on Sunday April 21, 2013 @05:20PM (#5586446)
FFI is also dead simple in Ruby.

https://github.com/ffi/ffi

It's pretty much `gem install ffi` and off you go. I've used a Ruby gem [1] that talks to a hashtable storage library via FFI and found it perfectly stable.

[1] https://github.com/jmettraux/rufus-tokyo

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