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cl:functions:make-symbol [2019/11/11 05:00] |
cl:functions:make-symbol [2021/01/20 16:00] (current) |
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| + | ====== Function MAKE-SYMBOL ====== | ||
| + | |||
| + | ====Syntax==== | ||
| + | * **make-symbol** //name// → //new-symbol// | ||
| + | |||
| + | ====Arguments and Values==== | ||
| + | * //name// - a //[[CL:Glossary:string]]//. | ||
| + | * //new-symbol// - a //[[CL:Glossary:fresh]]//, //[[CL:Glossary:uninterned]]// //[[CL:Glossary:symbol]]//. | ||
| + | |||
| + | ====Description==== | ||
| + | **make-symbol** creates and returns a //[[CL:Glossary:fresh]]//, //[[CL:Glossary:uninterned]]// //[[CL:Glossary:symbol]]// whose //[[CL:Glossary:name]]// is the given //name//. The //new-symbol// is neither //[[CL:Glossary:bound]]// nor //[[CL:Glossary:fbound]]// and has a //[[CL:Glossary:null]]// //[[CL:Glossary:property list]]//. | ||
| + | |||
| + | It is //[[CL:Glossary:implementation-dependent]]// whether the //[[CL:Glossary:string]]// that becomes the //new-symbol//'s //[[CL:Glossary:name]]// is the given //name// or a copy of it. Once a //[[CL:Glossary:string]]// has been given as the //name// //[[CL:Glossary:argument]]// to //[[CL:Glossary:make-symbol]]//, the consequences are undefined if a subsequent attempt is made to alter that //[[CL:Glossary:string]]//. | ||
| + | |||
| + | ====Examples==== | ||
| + | <blockquote> | ||
| + | ([[CL:Macros:defparameter]] *temp-string* "temp") <r>"temp" </r> | ||
| + | ([[CL:Macros:defparameter]] *temp-symbol* ([[CL:Functions:make-symbol]] *temp-string*)) <r>#:|temp| </r> | ||
| + | ([[CL:Functions:symbol-name]] *temp-symbol*) <r>"temp" </r> | ||
| + | ([[CL:Functions:eq]] ([[CL:Functions:symbol-name]] *temp-symbol*) temp-string) <r>//[[CL:Glossary:implementation-dependent]]// </r> | ||
| + | ([[CL:Functions:find-symbol]] "temp") <r>[[CL:Constant Variables:NIL]] | ||
| + | [[CL:Constant Variables:NIL]] </r> | ||
| + | ([[CL:Functions:eq]] ([[CL:Functions:make-symbol]] *temp-string*) (make-symbol *temp-string*)) <r>//[[CL:Glossary:false]]// </r> | ||
| + | </blockquote> | ||
| + | |||
| + | ====Side Effects==== | ||
| + | None. | ||
| + | |||
| + | ====Affected By==== | ||
| + | None. | ||
| + | |||
| + | ====Exceptional Situations==== | ||
| + | Should signal an error of type type-error if //name// is not a //[[CL:Glossary:string]]//. | ||
| + | |||
| + | ====See Also==== | ||
| + | * **[[CL:Functions:copy-symbol|Function COPY-SYMBOL]]** | ||
| + | |||
| + | ====Notes==== | ||
| + | No attempt is made by **make-symbol** to convert the case of the //[[CL:Glossary:name]]// to uppercase. The only case conversion which ever occurs for //[[CL:Glossary:symbol|symbols]]// is done by the //[[CL:Glossary:Lisp reader]]//. The program interface to //[[CL:Glossary:symbol]]// creation retains case, and the program interface to interning symbols is case-sensitive. | ||
| + | |||
