# Beginner: error when using multiple where stmts in hugs98

**Wim-Jan Hilgenbos
**
wimjan@xs4all.nl

*Fri, 01 Dec 2000 15:49:13 +0100*

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Hi,
I've been trying some examples in functional programming. Most things
work fine,
but I have trouble with expressions with 'where' clauses that define
more then one
local definition.
(I work with hugs98 version september 1999 under Linux)
For example:
----------[ Mydiff.hs ]----------------------
module Mydiff where
mydiff f = f'
where f' x = ( f (x+h) - f x) / h
h = 0.0001
----------[ end Mydiff.hs ]-------------------
When I try to load this module I get
ERROR "Mydiff.hs" (line 5): Syntax error in input (unexpected `=')
line 5 is the line h = 0.0001
I tried other examples like this one, played around with line-breaks
white-space etc.
Rewriting the f' line to f' x = (f (x+0.0001) - f x) / 0.0001 does the
trick, but is not very
satisfying.
Can anyone help?
WJ
PS. I attached above example
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Disclaimer:
"These opinions are my own, though for a small fee they be
yours too."
-- Dave Haynie
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filename="Mydiff.hs"
module Mydiff where
mydiff f = f'
where f' x = ( f (x+h) - f x) / h
h = 0.0001
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