Difference between revisions of "LlListFindList"
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| Line 5: | Line 5: | ||
|return_type=integer | |return_type=integer | ||
|Return_text=index of the first instance of {{LSLP|test}} in {{LSLP|src}}. | |Return_text=index of the first instance of {{LSLP|test}} in {{LSLP|src}}. | ||
|p1_type=list|p1_name=src|p1_desc= | |p1_type=list|p1_name=src|p1_desc=what to search in (haystack) | ||
|p2_type=list|p2_name=test|p2_desc= | |p2_type=list|p2_name=test|p2_desc=what to search for (needle) | ||
|func_footnote=If {{LSLP|test}} is not found in {{LSLP|src}}, {{LSL Const|ERR_GENERIC|integer|ihex=-1}} is returned.<br/> | |func_footnote=If {{LSLP|test}} is not found in {{LSLP|src}}, {{LSL Const|ERR_GENERIC|integer|ihex=-1}} is returned.<br/> | ||
The index of the first entry in the list is {{HoverText|0|zero}}<br> | The index of the first entry in the list is {{HoverText|0|zero}}<br> | ||
Revision as of 15:17, 12 September 2013
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Summary
Function: integer llListFindList( list src, list test );| 201 | Function ID |
| 0.0 | Forced Delay |
| 10.0 | Energy |
Returns the integer index of the first instance of test in src.
| • list | src | – | what to search in (haystack) | |
| • list | test | – | what to search for (needle) |
If test is not found in src, ERR_GENERIC is returned.
The index of the first entry in the list is 0
If test is found at the last index in src the positive index is returned (5th entry of 5 returns 4).
Caveats
- Strict type matching and case sensitivity is enforced.
- "1" != 1
- "1.0" != 1.0
- 1 != 1.0
- "a822ff2b-ff02-461d-b45d-dcd10a2de0c2" != (key)"a822ff2b-ff02-461d-b45d-dcd10a2de0c2"
- "Justice" != "justice"
- If test is an empty list the value returned is 0 rather than ERR_GENERIC.
Examples
<lsl>list numbers = [1, 2, 3, 4, 5]; default {
state_entry()
{
integer index = llListFindList(numbers, [3]);
if (index != -1)
{
list three_four = llList2List(numbers, index, index + 1);
llOwnerSay(llDumpList2String(three_four, ","));
// Object: 3,4
}
}
}</lsl> <lsl>//You can also search for two items at once to find a pattern in a list list avatarsWhoFoundMagicLeaves = ["Fire Centaur","Red Leaf"]; default {
state_entry()
{
integer index = llListFindList(avatarsWhoFoundMagicLeaves, ["Fire Centaur","Red Leaf"]);
if (index != -1)
{
list output = llList2List(avatarsWhoFoundMagicLeaves, index, index + 1);
llOwnerSay(llDumpList2String(output, ","));
// Object: Fire Centaur, Red Leaf
}
}
}</lsl>
Useful Snippets
An easy way to see if an item exists in a list... <lsl>if(~llListFindList(myList, (list)item)) {//it exists
//This works because ~(-1) == 0 //It saves bytecode and is faster then doing != -1 //This is a bitwise NOT (~) not a negation (-)
}</lsl>
See Also
Functions
| • | llSubStringIndex | – | Find a string in another string |
Deep Notes
All Issues
~ Search JIRA for related Issues
|
|
SVC-5146 | A | llSortedListFindList() - improved llListFindList() for known to be sorted lists |
Signature |
|---|
function integer llListFindList( list src, list test ); |