On Jul 13, 2007, at 18:56 , Brandon S. Allbery KF8NH wrote:

> return (isJust v)

*blush* Invert that, of course:  isNothing v

--
brandon s. allbery [solaris,freebsd,perl,pugs,haskell] [EMAIL PROTECTED]
system administrator [openafs,heimdal,too many hats] [EMAIL PROTECTED]
electrical and computer engineering, carnegie mellon university    KF8NH


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