24 lines
475 B
Plaintext
24 lines
475 B
Plaintext
;; use reader macros to transform (a OP b) into (OP b a)
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(lib 'match)
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(define-macro invert-= (a <- b) (set! b a))
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(define-macro invert-IF (a 'IF b) (when b a))
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(define raining #f)
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(#t <- raining)
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raining
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→ #t
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('umbrella-need IF raining)
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→ umbrella-need
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(#f <- raining)
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('umbrella-need IF raining)
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→ #f
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;; debug mode
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(debug 3)
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('umbrella-need IF raining)
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💡 [0] invert-IF → ('umbrella-need IF raining)
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compiled :: (#when raining 'umbrella-need)
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