Difference between revisions of "ListXandY"

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(New page: {{LSL Header}} __NOTOC__ <div id="box"> == Function: list ListXandY(list {{LSL Param|lx}}, list {{LSL Param|ly}}); == <div style="padding: 0.5em;"> This function examines two l...)
 
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default{
 
default{
 
   state_entry() {
 
   state_entry() {
       llSay(0, "The new combined list is: " + llList2CSV(ListXandY(l1,l2)) );
+
       llSay(0, "The two lists have the following items in common: " + llList2CSV(ListXandY(l1,l2)) );
 
       //will say: a, b, c
 
       //will say: a, b, c
 
   }
 
   }

Revision as of 14:55, 12 July 2008

Function: list ListXandY(list lx, list ly);

This function examines two lists, and returns a new list composed of the elements that both lists have in common.

<lsl> list ListXandY(list lx, list ly) {// return a list of elements common to both lists

   list lz = []; integer x;
   for (x = 0; x < llGetListLength(ly); x++) {
       if (~llListFindList(lx,llList2List(ly,x,x))) {
           lz = lz + llList2List(ly,x,x);
       }
       else {
           ;
       }
   }
   return lz;

} </lsl>


Example:

<lsl> list l1 = ["a","b","c","d"]; list l2 = ["a","1","b","2","c","3"];

default{

  state_entry() {
     llSay(0, "The two lists have the following items in common: " + llList2CSV(ListXandY(l1,l2)) );
     //will say: a, b, c
  }

} </lsl>

Posted with the kind permission of Very Keynes, which originated this script June 2007 in the SL scripters forum http://forums.secondlife.com/showthread.php?t=194138