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1 point by almkglor 6117 days ago | link | parent

It's part of the Arc core destructuring thing. For example:

  (let (x y z) (list 1)
    (prn x)
    (prn y)
    (prn z))
...will assign 1 to x, and nils to y and z. Basically it seems that destructuring is done in the following manner:

  (let gs4932 (list 1)
    (let x (car gs4932)
      (let y (car:cdr gs4932)
        (let z (car:cdr:cdr gs4932)
          (body ...)))))
(NOTE: not exact code, but basically this is how ac.scm handles destructuring)