How can I make Church numerals more human readable in lisp?
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by Jason Baker
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Published on 2010-04-20T13:46:16Z
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2010/04/20
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I can define church numerals fairly easy using scheme:
> (define f (lambda (x) x))
> (f f) ;0
#<procedure:f>
> (f (f f)) ;1
#<procedure:f>
However, this doesn't make it very easy to recognize that (f f) is 0 and (f (f f)) is 1. Is there a way that I can make these numerals more readable? What would be ideal is this:
> (f f)
0
> (f (f f))
1
The example is in scheme, but I'll take an answer in any lisp.
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