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Beau­tiful Racket / explainers

  1. (module module-name expander
       other-expressions
       to-expand
       and-evaluate ...)
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    (module module-name expander
       other-expressions
       to-expand
       and-evaluate ...)
    
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    (module my-module br
      (* 6 7))
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    (module my-module br
      (* 6 7))
    
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    42
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    42
    
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  2. (module mod-name br
      (format-datum '(hello world)))
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    (module mod-name br
      (format-datum '(hello world)))
    
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    '(hello world)
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    '(hello world)
    
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    (module mod-name racket
      (format-datum '(hello world)))
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    (module mod-name racket
      (format-datum '(hello world)))
    
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    format-datum: unbound identifier in module in: format-datum
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    format-datum: unbound identifier in module in: format-datum
    
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    (module mod-name racket
      (require br)
      (format-datum '(hello world)))
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    (module mod-name racket
      (require br)
      (format-datum '(hello world)))
    
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    '(hello world)
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    '(hello world)
    
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