atom [Function]

atom object => generalized-boolean

Arguments and Values::

object---an object.

generalized-boolean---a generalized boolean.

Description::

Returns true if object is of type atom; otherwise, returns false.

Examples::

 (atom 'sss) =>  true
 (atom (cons 1 2)) =>  false
 (atom nil) =>  true
 (atom '()) =>  true
 (atom 3) =>  true

Notes::

 (atom object) == (typep object 'atom) == (not (consp object))
 == (not (typep object 'cons)) == (typep object '(not cons))

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