On Sat, 2010-02-13 at 14:03 +0100, kg wrote: > Hi, > > I'm reading the following subject : > http://www.haskell.org/pipermail/haskell-cafe/2007-July/028227.html > > In the sample code, we can see : > > instance ReadAsAnyOf () ex > where readAsAnyOf ~() = mzero > > > > And, I've search the meaning of the symbol "~", but I've found nothing > about this (note that's not easy to search "~" on google ...) > > Could you give me a link about this, or explain me it ? > > Thx in advance.
http://www.haskell.org/tutorial/patterns.html - Section lazy patterns Regards
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