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3 points by CatDancer 5656 days ago | link | parent

If we allow table to take arguments to populate the table...

  -(xdef 'table (lambda () (make-hash-table 'equal)))
  +(xdef 'make-table (lambda () (make-hash-table 'equal)))

  -(set setter (table))
  +(set setter (make-table))

  ;; inserted before "def memo"

  +(def table args
  +  (let h (make-table)
  +    (map (fn ((k v)) (= (h k) v))
  +         (pair args))
  +    h))

  arc> (table 'a 1 'b 2)
  #hash((a . 1) (b . 2))
then the definitions of obj and listtab are simplified:

  (mac obj args
    `(table ,@(mappend (fn ((k v))
                         (list (list 'quote k) v))
                       (pair args))))

  arc> (macex1 '(obj a 1))
  (table (quote a) 1)

  (def listtab (al)
    (apply table (apply + '() al)))
and the value arguments to obj are evaluated early, like a function call, so there are no problems with atomic.