Difference between revisions of "While"

Revision as of 12:43, 8 February 2007

•	condition	–	If this executes as true then loop is executed.
•	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

//single statement
integer a = 0;
integer b = 10;
while(a < b)
    llOwnerSay((string)(a++));

//block statement
integer a = 0;
integer b = 10;
while(a < b)
{
    llOwnerSay((string)a);
    ++a;
}

//null statement
integer a = 0;
integer b = 10;
while(++a < b);

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

While

@@ Line 5: / Line 5: @@
 |statement_end=loop
 |statement_end_desc=Can be either a single statement, a block statement, or a null statement.
-|p1_name=initializer|p1_desc=Executed once just before checking '''condition'''.
+|p1_name=condition|p1_desc=If this executes as true then '''loop''' is executed.
-|p2_name=condition|p2_desc=If this executes as true then '''loop''' is executed.
-|p3_name=increment|p3_desc=Executed after '''loop''', then '''condition''' is checked again.
 |constants
 |spec