Difference between revisions of "Do while"
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|spec | |spec | ||
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|examples=<lsl>//Counts from 1 to 5 | |examples=<div style="display:inline-block; vertical-align:top;"><lsl>//Counts from 1 to 5 | ||
default | default | ||
{ | { | ||
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while(olf<5); | while(olf<5); | ||
} | } | ||
}</lsl> | }</lsl></div> | ||
<lsl>//Counts from 0 to 4 | <div style="display:inline-block; vertical-align:top;"><lsl>//Counts from 0 to 4 | ||
default | default | ||
{ | { | ||
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while((++olf)<5); | while((++olf)<5); | ||
} | } | ||
}</lsl> | }</lsl></div> | ||
<lsl>//Counts from 0 to 4 and coments as it | <div style="display:inline-block; vertical-align:top;"><lsl>//Counts from 0 to 4 and coments as it loops (block statement demo) | ||
default | default | ||
{ | { | ||
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while((++olf)<5); | while((++olf)<5); | ||
} | } | ||
}</lsl> | }</lsl></div> | ||
|helpers | |helpers | ||
|also_header | |also_header | ||
Revision as of 12:46, 24 April 2009
| 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
<lsl>//Counts from 1 to 5
default {
state_entry()
{
integer olf;
do
llSay(0, (string) (++olf));
while(olf<5);
}
}</lsl><lsl>//Counts from 0 to 4
default {
state_entry()
{
integer olf;
do
llSay(0, (string)olf);
while((++olf)<5);
}
}</lsl><lsl>//Counts from 0 to 4 and coments as it loops (block statement demo)
default {
state_entry()
{
integer olf;
do
{
llSay(0, (string)olf);
llSay(0, "looping");
}
while((++olf)<5);
}
}</lsl>Deep Notes
Footnotes
- ^ The OpenSim LSL compiler will not do this implicitly. You will need to use an explicit check.