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COMBINATORS | |
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Command.hs | |
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Env.hs | |
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Eval.hs | |
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Exp.hs | |
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Parser.hs | |
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README | |
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Stack.hs | |
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Test.hs |
README
SKI combinator emulator by Kazu Yamamoto
Commands:
get -- show the table of combinator definition
clear -- initialize the table of combinator definition
def -- define combinator
eval -- evaluate expression
% ghci Command.hs
> eval "((S(KS))K)xyz"
(x(yz))
> eval "S(KS)Kxyz"
(x(yz))
% ghci Command.hs
> get
fromList [('K',K),('S',S)]
> def "I=SKK"
> get
fromList [('I',((SK)K)),('K',K),('S',S)]
> eval "Ix"
x
> def "B=S(KS)K"
> eval "Bxyz"
(x(yz))
> clear
> get
fromList [('K',K),('S',S)]
Combinator definitions:
def "I=SKK"
def "B=S(KS)K"
def "C=S(BBS)(KK)"
def "T=CI"
def "W=ST"
def "M=SII"
def "L=CBM"
def "Y=SLL"