[Haskell-cafe] Stupid question #374: why is MaybeT not in the standard library?

Luke Palmer lrpalmer at gmail.com
Mon Dec 22 18:29:32 EST 2008

On Mon, Dec 22, 2008 at 3:31 PM, Brian Hurt <bhurt at spnz.org> wrote:

> I wrote my own implementation of MaybeT (which was a usefull exercise), but
> a quick google showed:
> http://www.haskell.org/haskellwiki/New_monads/MaybeT
> But I'm wondering why it's not in the standard library.  The standards
> committee just hasn't gotten around to it yet?  Or was there some discussion
> of this in the past on some (public) maillist, that my admittedly shallow
> googling failed to uncover, that someone could point me at?

Yeah, it'd be useful.  Doesn't really matter, though, because it's on
Hackage (http://hackage.haskell.org), so it's just a cabal install MaybeT

Now that cabal and cabal-install are reasonably mature, we really don't have
to worry about what's blessed as "standard" anymore.  :-)

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