[Haskell-cafe] let vs. where

[Henning Thielemann]

On Tue, 13 Nov 2007, Dan Piponi wrote:

> On Nov 13, 2007 1:24 PM, Ryan Ingram <ryani.spam at gmail.com> wrote:
> > I tend to prefer where, but I think that guards & function declarations are
> > more readable than giant if-thens and case constructs.
>
> Up until yesterday I had presumed that guards only applied to
> functions. But I was poking about in the Random module and discovered
> that you can write things like
>
> a | x > 1 = 1
>   | x < -1 = -1
>   | otherwise = x

Btw. I would write here
  min 1 (max (-1) x)
 or even better define a function for such clipping, since it is needed
quite often.