[Haskell-cafe] How do you make constant expressions?

Ivan Lazar Miljenovic ivan.miljenovic at gmail.com
Mon Jul 19 04:34:55 EDT 2010

Eitan Goldshtrom <thesourceofx at gmail.com> writes:

> Correction to my last e-mail. I figured out why it worked at first and
> then failed, so I'll refine my question. I'd like the compiler to
> simply put the number 800 everywhere that I put the name "width" in my
> code. Instead it's putting (800 :: Float), or Double or Int, whatever
> I want, but it's restricted to one data type. I want to remove that
> restriction since it is a constant.

It _might_ work by having an explicit type signature for it:

width :: (Num a) => a
width = 800

But I think it will get defaulted to something.

Ivan Lazar Miljenovic
Ivan.Miljenovic at gmail.com

More information about the Haskell-Cafe mailing list