On Tue, Nov 09, 1999 at 03:54:00PM +1300, Richard A. O'Keefe wrote:
> Luis Manuel O.Soares wrote:
> > Is there any function that takes a String as an argument and returns a
> > numeral??
>
> Andy Gill wrote:
> There is no built in function that does what you want.
>
> But there _is_ a built in function that does what he _asked for_.
> If s is a string of the form
> - zero or more layout characters
> - optional sign
> - one or more digits
> - zero or more layout characters
> then read s will do the job perfectly. Example:
>
> % hugs
> -- banner deleted
> Prelude> (read " -2 ") :: Int
> -2
>
There's also digitToInt in the Char library (which operates on individual
characters). Numeric also has a bunch of different read* functions (readInt,
readDec, readHex etc). On that note, how come there's no showOct or showHex?
Or am I missing?
--
-Simon Raahauge DeSantis
