The London Haskell user group has a talk next week:
The Algebra of Algebraic Data Types
Speaker: Chris Taylor
Haskell's types are "algebraic data types". But what's so 'algebraic'
about algebraic types? This talk explains what types have to do with
algebra, starting with counting and type equations (Maybe x = 1 + x) and
maybe getting as far as the calculus of types, divided types and what
the hell it means to take the exponential of a type. No assumptions on
any maths background beyond what you learned at school.
Wednesday 28-Nov-2012 6-30pm
City University, College Building, St John Street, London. EC1V 4PB
http://www.meetup.com/London-HUG/events/88524182/
Link on Reddit: http://redd.it/13nry4
The talk will be followed by a discussion of a potential London Haskell
coding project:
http://www.meetup.com/London-HUG/events/92459312/
Other news, the video <http://www.youtube.com/watch?v=3q8xYFDYLeI>, code
<https://github.com/londonhaskell/londonhaskell-2012-10-24-why-do-monads-matter>
and slides
<http://files.londonhaskell.org/2012/10/24/WhyDoMonadsMatter-WithAnimations.pdf>
from the last meeting (Why Do Matter Matter?) have been uploaded.
Video = http://www.youtube.com/watch?v=3q8xYFDYLeI
Code =
https://github.com/londonhaskell/londonhaskell-2012-10-24-why-do-monads-matter
PDF with animations (for on-screen viewing) =
http://files.londonhaskell.org/2012/10/24/WhyDoMonadsMatter-WithAnimations.pdf
PDF (with most of the animations removed for printing) =
http://files.londonhaskell.org/2012/10/24/WhyDoMonadsMatter.pdf
PowerPoint Presentation (with all the animations!) =
http://files.londonhaskell.org/2012/10/24/WhyDoMonadsMatter.pptx
<http://files.londonhaskell.org/2012/10/24/WhyDoMonadsMatter.pptx>Hope
to see you there.
Yours, Derek.
http://www.meetup.com/London-HUG/
<http://www.meetup.com/London-HUG/>
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