[Haskell] Undefined of Char.toUpper ?

Luo Shuli mykeyboard at 21cn.com
Wed Apr 27 04:54:30 EDT 2005

Dear Haskellers,
I am a beginer of the haskell language and study it from <<Yet Another
Haskell Tutarial>> of Hal Daume III.
Example  from the tutarial:
	Prelude> map Char.toUpper "Hello World"

I try it on Hugs for windows32, compile error:
       ERROR - Undefined qualified variable "Char.toUpper"

Could anybody tell me what's the matter with it?

Luo Shuli

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