Defining an Escher Drawing with Julia(nbviewer.ipython.org)

111 pointsby leephillipsvor 11 Jahren5 comments

nbviewer.ipython.org

http://nbviewer.ipython.org/github/shashi/ijulia-notebooks/blob/master/funcgeo/Functional%20Geometry.ipynb

3 comments

kjhughesvor 11 Jahren

This is a gem of a post. Loved it.

Don't miss:

   Notice how the fish interlock without leaving out any space in between them.
   Escher FTW.

And:

   Abstraction barriers are useful tools that can reduce the cognitive overhead
   on the programmer.

Although of course familiar with the concepts of abstract data types from CS and architecture/implementation layers from CompE/EE, I've not heard the term abstraction barriers before this. I like the combination.

g0wdavor 11 Jahren

Hey, I made this notebook. Thanks!

SICP talks about abstraction barriers, and I love the idea. It can guide great library design. When in doubt, I sometimes read this again: https://mitpress.mit.edu/sicp/full-text/sicp/book/node29.htm...

journeemanvor 11 Jahren

And the best way to find the right abstraction barriers is 'wishful thinking'. :-)

Greatly reduces the 'Invent and fit; have fits and reinvent!' cycle.

notthemessiahvor 11 Jahren

Note that Compose.jl is used as the backend to the plotting library Gadfly.jl.

http://composejl.org/

ICWienervor 11 Jahren

Nice article.

By the way, you may want to watch this course by Hal Abelson and Gerald Jay Sussman (Henderson Escher example):

http://ocw.mit.edu/courses/electrical-engineering-and-comput...

Also, the article reminded me of LOGO.