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Haskell is a purely functional programming language, featuring static typing, lazy evaluation, and monadic effects. The primary implementation is GHC, a high-performance compiler with a runtime supporting many forms of parallelism and concurrency.

5 votes
1 answer
166 views

Writing a faster mutable trie

I am implementing a mutable trie. I tested and it produces correct results. However, it is very slow. I benchmark it against plain old Data.Map, which is more than twice as fast. Full source So what …
5 votes
2 answers
391 views

BestApproximationDiv2 problem in Haskell

The task is to write a function findFraction maxDen number to find a short but good rational approximation to a decimal representation of a number — problem statement on TopCoder: Given a fraction …