atom
at·om / ˈatəm/ • n. the basic unit of a chemical element. ∎ such particles as a source of nuclear energy: the power of the atom. ∎ an extremely small amount of a thing or quality: I shall not have one atom of strength left.
atom
atom
atom A value that cannot be decomposed further. In LISP an atom is a representation of an arbitrary string of characters or the special atom NIL, i.e. nothing. The word is also used as a predicate in LISP-like languages to determine whether an arbitrary value is or is not an atom:
(atom (cons(h, t)))
always yields FALSE but
(atom, NIL)
and
(atom, “word”)
evaluate to TRUE.
(atom (cons(h, t)))
always yields FALSE but
(atom, NIL)
and
(atom, “word”)
evaluate to TRUE.
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