Re: Begginer question

Ketil Malde wrote:
> Maurício <briqueabraque@xxxxxxxxx> writes:
>
>  > (...)
>
> > Couldn't match `Float' against `Complex Float'
> >         Expected type: Float
> >         Inferred type: Complex Float
> >     In the second argument of `(+)', namely `sqr_delta'
> >     In the definition of `x1': x1 = (b + sqr_delta)
>
>
> The error message says it all, really.
>
> > (...)
>
> Note that Haskell doesn't automatically convert arguments for you --
> this is a feature.  
>
> -kzm

  When I type this:

*****
import Complex;
a = 3 :+ 4;
*****

and load it into ghci, "a + 4" gives me "7.0 :+ 4.0", although "a + 
(4::Float)" gives me that error again. Why Haskell converts "4" to 
Complex but not a Float?

  Maurício