Difference between revisions of "Do while"
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m (Speed and Memory usage of Do...While.) |
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|statement=do while | |statement=do while | ||
|statement_header | |statement_header | ||
|statement_desc=Any of the statements can be null statements. | |statement_desc=Any of the statements can be null statements. A do...while loop is slightly faster than a while or for loop, and requires fewer bytes of memory than a while or for loop. | ||
|statement_title=do {{LSL Param|loop}} while ({{LSL Param|condition}}); | |statement_title=do {{LSL Param|loop}} while ({{LSL Param|condition}}); | ||
|p1_name=loop | |p1_name=loop | ||
Revision as of 10:14, 26 November 2007
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
do loop while (condition);
| • | loop | – | Executes once, then executes condition. | |
| • | condition | – | If condition executes true, it then loops back and executes loop again. |
Any of the statements can be null statements. A do...while loop is slightly faster than a while or for loop, and requires fewer bytes of memory than a while or for loop.
Specification
| 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
//Counts from 1 to 5
default
{
state_entry()
{
integer olf;
do
llSay(0, (string) (++olf));
while(olf<5);
}
}
//Counts from 0 to 4
default
{
state_entry()
{
integer olf;
do
llSay(0, (string)olf);
while((++olf)<5);
}
}
Deep Notes
Footnotes
- ^ The OpenSim LSL compiler will not do this implicitly. You will need to use an explicit check.