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.
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