[Haskell-cafe] How to decide if a number is an integer?

[Jimmy Hartzell]

Use properFraction:
http://haskell.org/ghc/docs/latest/html/libraries/base/Prelude.html#v%3AproperFraction

> Hi,
>   In other weak-type language, `round i == i` would work. But in
> haskell, what should I do? Thanks.
> --
> 竹密岂妨流水过
> 山高哪阻野云飞
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