lispdoc - results for unless |
(unless test &body forms) | Function: If the first argument is not true, the rest of the forms are evaluated as a PROGN.
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Example:(defun file-pathname-p (p) (unless (directory-pathname-p p) p)) | Mentioned in: CLtL2 - 24.1. General Error-Signaling Functions CLtL2 - 26.10. Conditional Execution CLtL2 - 26.3.2. Kinds of Loop Clauses CLtL2 - 6. Predicates CLtL2 - 6.4. Logical Operators CLtL2 - 7. Control Structure CLtL2 - 7.10.2. Rules Governing the Passing of Multiple Values CLtL2 - 7.6. Conditionals HyperSpec - Macro WHEN, UNLESS On Lisp - Adding Prolog Features On Lisp - Chapter _28 On Lisp - New Utilities (Computation at Compile-Time) On Lisp - Objects in Plain Lisp On Lisp - Referential Transparency PCL - and or and not PCL - the mighty loop PCL - when and unless |
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| By Bill Moorier |
