[Haskell-beginners] Show Floats

[David Virebayre]

On Fri, Nov 6, 2009 at 6:59 AM, Nathan M. Holden <nathanmholden at gmail.com>wrote:

> Um... well, I solved my own problem.
>
> It turns out that my 20-30 minutes of searching for a way to \definecolor
> in
> terms of 0-255 instead of 0.0-1.0 were just 5 minutes short of finding out
> a
> way to do it.
>
> This is embarrassing.
>

If you have this problem again, you can use printf :

GHCi, version 6.10.3: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer ... linking ... done.
Loading package base ... linking ... done.
Prelude> import Text.Printf
Prelude Text.Printf> let f=0.001
Prelude Text.Printf> f
1.0e-3
Prelude Text.Printf> printf "%5.4f\n" f
0.0010
Prelude Text.Printf>



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