Difference between revisions of "ListCast"
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| Line 28: | Line 28: | ||
else if (type == TYPE_FLOAT) | else if (type == TYPE_FLOAT) | ||
while ((--x) >= 0) { | while ((--x) >= 0) { | ||
if (llGetListEntryType(mixedList, x)) result = [llList2Float(mixedList, x)] + result; | if (llGetListEntryType(mixedList, x) == TYPE_FLOAT) result = [llList2Float(mixedList, x)] + result; | ||
else result = [(float)llList2String(mixedList, x)] + result; | else result = [(float)llList2String(mixedList, x)] + result; | ||
} | } | ||
Revision as of 15:15, 8 May 2009
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Summary
Function: list listCast( list mixedList, integer type );
Iterates through the contents of a list, producing a resulting list whose contents are cast to a single type. Please refer to llGetListEntryType() for valid types. This function is useful for converting a list to a type which is more memory efficient, or to a type that you know you are going to access a lot (in order to remove extra casting later-on).
Returns a list whose contents are all one type.
| • list | mixedList | – | The list to cast, its contents may be anything. | |
| • integer | type | – | The type of variable to cast all entries to. |
Examples
<lsl>
list mixed = [1, 2.0, "3", "Four", (key)"8aef4875-6873-0919-f5ab-c9d6b48d18d4"];
// Prints: 1, 2, 3, 0, 8
llOwnerSay(llList2CSV(listCast(mixed, TYPE_INTEGER)));
// Prints: 1.000000, 2.000000, 3.000000, 0.000000, 0.000000
llOwnerSay(llList2CSV(listCast(mixed, TYPE_FLOAT)));
</lsl>
Implementation
<lsl>list listCast(list mixedList, integer type) {
list result = []; integer x = mixedList != [];
if (type == TYPE_INTEGER)
while ((--x) >= 0)
result = [(integer)llList2String(mixedList, x)] + result;
else if (type == TYPE_FLOAT)
while ((--x) >= 0) {
if (llGetListEntryType(mixedList, x) == TYPE_FLOAT) result = [llList2Float(mixedList, x)] + result;
else result = [(float)llList2String(mixedList, x)] + result;
}
else if (type == TYPE_VECTOR)
while ((--x) >= 0)
result = [(vector)llList2String(mixedList, x)] + result;
else if (type == TYPE_ROTATION)
while ((--x) >= 0)
result = [(rotation)llList2String(mixedList, x)] + result;
else if (type == TYPE_STRING)
while ((--x) >= 0)
result = [llList2String(mixedList, x)] + result;
else if (type == TYPE_KEY)
while ((--x) >= 0)
result = [llList2Key(mixedList, x)] + result;
else result = mixedList;
return result;
}</lsl>