flatland/useful — pull request #7 by babilen (2012-04-02 12:18:49+00:00)
Title: Functions for splitting at subsequences and computing sequence pre-/suffixes

These two commits introduce four functions, namely `split-at-subs`, `take-to-subs`, `prefixes` and `suffixes` to work with subsequences. I would be happy if they could be merged into useful as I find them quite, well, useful and think that they might be used by a wider audience. Please refer to the unit-tests for examples of their usage.