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====== Function FILL ====== ====Syntax==== * **fill** //sequence// //item// ''&key'' //start// //end// → //sequence// ====Arguments and Values==== * //sequence// - a //[[CL:Glossary:proper sequence]]//. * //item// - a //[[CL:Glossary:sequence]]//. * //start//, //end// - //[[CL:Glossary:bounding index designator|bounding index designators]]// of //sequence//. The defaults for //start// and //end// are ''0'' and **[[CL:Constant Variables:nil]]**, respectively. ====Description==== Replaces the //[[CL:Glossary:element|elements]]// of //sequence// //[[CL:Glossary:bounded]]// by //start// and //end// with //item//. ====Examples==== <blockquote> (fill ([[CL:Functions:list]] 0 1 2 3 4 5) '(444)) <r>((444) (444) (444) (444) (444) (444))</r> (fill ([[CL:Functions:copy-seq]] "01234") #\e :start 3) <r>"012ee" </r> ([[CL:Macros:defvar]] *x* ([[CL:Functions:vector]] 'a 'b 'c 'd 'e)) <r>*X*</r> *x* <r>#(A B C D E) </r> (fill *x* 'z :start 1 :end 3) <r>#(A Z Z D E) </r> *x* <r>#(A Z Z D E) </r> (fill *x* 'p) <r>#(P P P P P) </r> *x* <r>#(P P P P P) </r> </blockquote> ====Side Effects==== //sequence// is destructively modified. ====Affected By==== None. ====Exceptional Situations==== Should be prepared to signal an error of type type-error if //sequence// is not a //[[CL:Glossary:proper sequence]]//. Should signal an error of type type-error if //start// is not a non-negative //[[CL:Glossary:integer]]//. Should signal an error of type type-error if //end// is not a non-negative //[[CL:Glossary:integer]]// or **[[CL:Constant Variables:nil]]**. ====See Also==== * **[[CL:Functions:replace|Function REPLACE]]** * **[[CL:Functions:nsubstitute|Function NSUBSTITUTE]]** ====Notes==== <blockquote> (fill //sequence// //item//) ≡ ([[CL:Functions:nsubstitute-if]] //item// ([[CL:Functions:constantly]] [[CL:Constant Variables:t]]) //sequence//) </blockquote> \issue{SUBSEQ-OUT-OF-BOUNDS} \issue{RANGE-OF-START-AND-END-PARAMETERS:INTEGER-AND-INTEGER-NIL}