A collection of links to the excellent "Composing Software" series of medium stories by Eric Elliott.
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s x y z = x z (y z) | |
k x y = x | |
i = s k k | |
c = s (s (k (s (k s) k)) s) (k k) | |
b = s (k s) k | |
hello = | |
s(s(k s)(s(k k)(s(k s)(s(k(s(k s)))(s(s(k s)(s(k k)(s(k b)i)))(k(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s | |
b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(c k)))))))))))))))))))))))))))))))))))))))))) | |
)))))))))))))))))))))))))))(s(s(k s)(s(k k)(s(k s)(s(k(s(k s)))(s(s(k s)(s(k k)(s(k b)i)))(k(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s b(s |
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import static java.lang.System.*; | |
import java.util.function.BiFunction; | |
import java.util.function.Function; | |
// Implementation of a pseudo-GADT in Java, translating the examples from | |
// http://www.cs.ox.ac.uk/ralf.hinze/publications/With.pdf | |
// The technique presented below is, in fact, just an encoding of a normal Algebraic Data Type | |
// using a variation of the visitor pattern + the application of the Yoneda lemma to make it | |
// isomorphic to the targeted 'GADT'. |
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#!/usr/bin/env python2 | |
# NOTE: Use of this script is deprecated, instead I recommend you use | |
# | |
# $ unzip -LL eui_v1_20.zip -d "$HOME/.steam/steam/SteamApps/common/Sid Meier's Civilization V/steamassets/assets/dlc" | |
# | |
# to make use of the unzip command's built-in conversion to lowercase filenames | |
# (thanks reddit user /u/xkero and github user Mfdas) | |
import os |