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cl:constant_variables:nil [2019/12/05 02:00]
cl:constant_variables:nil [2019/12/07 23:00] (current)
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 +====== Constant Variable NIL ======
  
 +====Constant Value====
 +**nil**.
 +
 +====Description====
 +**nil** represents both //​[[CL:​Glossary:​boolean]]//​ (and //​[[CL:​Glossary:​generalized boolean]]//​) //​[[CL:​Glossary:​false]]//​ and the //​[[CL:​Glossary:​empty list]]//.
 +
 +====Examples==== ​
 +<​blockquote>​
 +nil <​r>​NIL</​r>​
 +() <​r>​NIL</​r>​
 +'nil <​r>​NIL</​r>​
 +'() <​r>​NIL</​r>​
 +</​blockquote>​
 +
 +====See Also====
 +  * **[[CL:​Constant Variables:​t]]**
 +
 +====Notes====
 +None.
 +
 +====Editor Notes====
 +The //​[[CL:​Glossary:​symbol]]//​ **nil** is also sometimes used for other purposes as well. For example, as a //​[[CL:​Glossary:​designator]]//​ (//e.g.// a //​[[CL:​Glossary:​stream designator]]//​).