Difference between revisions of "ListXnotY"
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m (calling the llGetListLength function outside the for statement, saves time. Also there is only one case in the if statement) |
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| Line 9: | Line 9: | ||
<lsl> | <lsl> | ||
list ListXnotY(list lx, list ly) {// return elements in X list that are not in Y list | list ListXnotY(list lx, list ly) {// return elements in X list that are not in Y list | ||
list lz | list lz; | ||
integer i; | |||
integer n = llGetListLength(lx); | |||
if ( | for (i = 0; i < n; i++) | ||
{ | |||
if (llListFindList(ly,llList2List(lx,i,i)) == -1) | |||
lz = lz + llList2List(lx,i,i); | |||
lz = lz + llList2List(lx, | |||
} | } | ||
return lz; | return lz; | ||
} | } | ||
</lsl> | </lsl> | ||
Revision as of 04:09, 12 January 2010
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Function: list ListXnotY(list lx, list ly);
Show what x list has that y list is missing.
See also: Lists
<lsl> list ListXnotY(list lx, list ly) {// return elements in X list that are not in Y list
list lz;
integer i; integer n = llGetListLength(lx); for (i = 0; i < n; i++) {
if (llListFindList(ly,llList2List(lx,i,i)) == -1)
lz = lz + llList2List(lx,i,i);
}
return lz;
}
</lsl>
Example:
<lsl> list l1 = ["a","b","c","d"]; list l2 = ["a","1","b","2","c","3"];
default{
state_entry() {
llSay(0, "X list has this in it, but Y list doesn't: " + llList2CSV(ListXnotY(l1,l2)) );
//will say: d
}
} </lsl>
Posted with the kind permission of Very Keynes, who originated this script June 2007 in the SL scripters forum http://forums.secondlife.com/showthread.php?t=194138