Difference between revisions of "While"

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{{Multi-lang}}
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{{LSL_Conditional
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Revision as of 17:12, 24 October 2008

while( conditionloop

•  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.

Specification

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

Examples

<lsl> //single statement integer a = 0; integer b = 10; while(a < b)

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

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

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

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

Notes

A do-while loop is faster than a while loop or a for loop.


Deep Notes

Search JIRA for related Issues

Footnotes

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