Difference between revisions of "For"
Jump to navigation
Jump to search
Search JIRA for related Issues
Omei Qunhua (talk | contribs) m (revised first example to show full version of 'for' statement including initialiser statement) |
Lady Sumoku (talk | contribs) m (Replaced old <LSL> block with <source lang="lsl2">) |
||
| Line 11: | Line 11: | ||
|spec | |spec | ||
|caveats | |caveats | ||
|examples=< | |examples=<source lang="lsl2"> | ||
//single statement type. | //single statement type. | ||
integer a; | integer a; | ||
| Line 17: | Line 17: | ||
for(a = 1; a <= b; ++a) | for(a = 1; a <= b; ++a) | ||
llOwnerSay((string)a); | llOwnerSay((string)a); | ||
</ | </source> | ||
< | <source lang="lsl2"> | ||
//block statement | //block statement | ||
integer a = 0; | integer a = 0; | ||
| Line 27: | Line 27: | ||
llOwnerSay((string)a); | llOwnerSay((string)a); | ||
} | } | ||
</ | </source> | ||
< | <source lang="lsl2"> | ||
//null statement | //null statement | ||
integer a = 0; | integer a = 0; | ||
integer b = 10; | integer b = 10; | ||
for(; a < b; llOwnerSay((string)(a++))); | for(; a < b; llOwnerSay((string)(a++))); | ||
</ | </source> | ||
|helpers | |helpers | ||
|also_header | |also_header | ||
| Line 41: | Line 41: | ||
|also_footer | |also_footer | ||
|notes=A for loop is the same as a while loop as below. | |notes=A for loop is the same as a while loop as below. | ||
< | <source lang="lsl2"> | ||
initializer; | initializer; | ||
while(condition) | while(condition) | ||
| Line 48: | Line 48: | ||
increment; | increment; | ||
} | } | ||
</ | </source> | ||
|mode | |mode | ||
|deprecated | |deprecated | ||
Revision as of 01:05, 22 January 2015
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
for( initializer; condition; increment ) loop
| • | 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.
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
//single statement type.
integer a;
integer b = 10;
for(a = 1; a <= b; ++a)
llOwnerSay((string)a);
//block statement
integer a = 0;
integer b = 10;
for(; a < b; ++a)
{
llOwnerSay((string)a);
llOwnerSay((string)a);
}
//null statement
integer a = 0;
integer b = 10;
for(; a < b; llOwnerSay((string)(a++)));
Notes
A for loop is the same as a while loop as below.
initializer;
while(condition)
{
loop;
increment;
}
Deep Notes
Footnotes
- ^ The OpenSim LSL compiler will not do this implicitly. You will need to use an explicit check.