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Date: 2008-07-21 (21:28)
From: Paolo Donadeo <p.donadeo@g...>
Subject: Disappointment
I'm disappointed with myself and my incredibly low IQ. Late this
evening I decided -- and this is the third time -- to be enlightened
by the concept of monad.

I like functional programming, but monads [1] must be too little to be
grabbed by my mind. This time the interest in monads was aroused by
the interesting article of David Teller, Arnaud Spiwack and Till
Varoquaux [2] about the error monad, but for using the library they
wrote I need at least some knowledge about monads and the do-notation.

I tried with some tutorials found around, but I still cannot catch the
point: what the hell is a monad?

I ask you all: can anyone make me a practical example, something
involving strings, files, the network, an image or sound processing
algorithm, something vaguely real? Not abstract mathematical
structures, beautiful algebraic properties and general statements,
please: the net is full of such tutorials, especially Haskell fan
sites ;-)

Thanks in advance for your patience.


Ing. Paolo Donadeo
Studio Associato 4Sigma
Personal website: