> that's not possible in "purely" functional languages To be clear, it's always possible in a purely functional language, just not always reasonable or efficie

> that's not possible in "purely" functional languages To be clear, it's always possible in a purely functional language, just not always reasonable or efficient. As far as your point goes, I totally agree. There are algorithms that are better suited for functional languages (ones that involve tree's and lists) and there are algorithms that are better suited for imperative languages (disjoint sets, hashing algorithms, lots of graph algorithms).