Comment by tromp

Haskell is relatively WTF free as a language, behaving pretty much like the lambda calculus, but the standard libraries have their share of WTFs, such as the Enum instance for Double:

ghci> [0, 0.3 .. 2.0] [0.0,0.3,0.6,0.8999999999999999,1.2,1.5,1.7999999999999998,2.1]

I'd rather not see 2.1 in a range up to 2.0