Re: [Haskell-cafe] Shorthand method of enumerating a list a gotcha ... or is it just me?

From the Haskell 98 report (section 6.3.4):

For Float and Double, the semantics of the enumFrom family is given by the rules for Int above, except that the list terminates when the elements become greater than e3+i/2 for positive increment i, or > when they become less than e3+i/2 for negative i.

So yes, it is surprising, but according to the specification. But then again the very concept of a type like Float having an Enum instance is a bit weird.