Difference between revisions of "For"

Revision as of 10:09, 6 November 2012

•	initializer	–	Executed once just before checking condition.
•	condition	–	If this executes as true then loop is executed.
•	increment	–	Executed after loop, then condition is checked again.
•	loop	–	Can be either a single statement, a block statement, or a null statement.

Any of the statements can be null statements.

**Conditional Types**
Type	Condition
integer	True if it is not zero.
float	True if it is not zero.^[1]
string	True if its length is not zero.
key	True only if it is a valid key and not NULL_KEY.
vector	True if the vector is not ZERO_VECTOR.
rotation	True if the rotation is not ZERO_ROTATION.
list	True if the length is not zero. Note that correct behavior is only seen with Mono-compiled scripts; LSO-compiled scripts incorrectly resolve to false if the list is non-empty: BUG-230728

<lsl> //single statement type. integer a = 0; integer b = 10; for(; a < b; ++a)

   llOwnerSay((string)a);

</lsl> <lsl> //block statement integer a = 0; integer b = 10; for(; a < b; ++a) {

   llOwnerSay((string)a);
   llOwnerSay((string)a);

} </lsl> <lsl> //null statement integer a = 0; integer b = 10; for(; a < b; llOwnerSay((string)(a++))); </lsl>

A for loop is the same as a while loop as below. <lsl> initializer; while(condition) {

   loop;
   increment;

} </lsl>

^ The OpenSim LSL compiler will not do this implicitly. You will need to use an explicit check.

For

@@ Line 38: / Line 38: @@
 |also_functions
 |also_tests
-|also_articles
+|also_articles=
+{{LSL Tip|Please read [[User:Kireji_Haiku/How_to_deal_with_lists_in_LSL|this intro of how to iterate over a list in LSL]].}}
 |also_footer
 |notes=A for loop is the same as a while loop as below.