or: Difference between revisions
Jump to navigation
Jump to search
m (Example bold and links) |
m (template:command argument fix) |
||
| Line 9: | Line 9: | ||
| Returns [[true]] only if one or both conditions are [[true]]. In case of the alternative syntax, [http://en.wikipedia.org/wiki/Lazy_evaluation#Control_structures lazy evaluation] is used (if left operand is [[true]], evaluation of the right side is skipped completely). | | Returns [[true]] only if one or both conditions are [[true]]. In case of the alternative syntax, [http://en.wikipedia.org/wiki/Lazy_evaluation#Control_structures lazy evaluation] is used (if left operand is [[true]], evaluation of the right side is skipped completely). | ||
Identical to: a [[a or b| || ]] b |= | Identical to: a [[a or b| || ]] b |DESCRIPTION= | ||
____________________________________________________________________________________________ | ____________________________________________________________________________________________ | ||
| [[Boolean]] <nowiki>=</nowiki> a '''or''' b |= | | [[Boolean]] <nowiki>=</nowiki> a '''or''' b |SYNTAX= | ||
|p1= a: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |= | |p1= a: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |PARAMETER1= | ||
|p2= b: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |= | |p2= b: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |PARAMETER2= | ||
| [[Boolean]] |= | | [[Boolean]] |RETURNVALUE= | ||
|s2= [[Boolean]] <nowiki>=</nowiki> a '''or''' b (''Only available since ArmA 2:OA v1.62.'') |= | |s2= [[Boolean]] <nowiki>=</nowiki> a '''or''' b (''Only available since ArmA 2:OA v1.62.'') |SYNTAX= | ||
|p21= a: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |= | |p21= a: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |PARAMETER1= | ||
|p22= b: [[Code]] - Code that returns [[Boolean]]. It is not evaluated if '''a''' returns as [[true]]. |= | |p22= b: [[Code]] - Code that returns [[Boolean]]. It is not evaluated if '''a''' returns as [[true]]. |PARAMETER2= | ||
|r2= [[Boolean]] |= | |r2= [[Boolean]] |RETURNVALUE= | ||
____________________________________________________________________________________________ | ____________________________________________________________________________________________ | ||
|x1= <code>[[if]] ((OBJ1) [[or]] (_enemycount [[==]] 0)) [[then]] {[[hint]] "you win !"}</code> |= | |x1= <code>[[if]] ((OBJ1) [[or]] (_enemycount [[==]] 0)) [[then]] {[[hint]] "you win !"}</code> |EXAMPLE1= | ||
|x2= <code>[[if]] (([[count]] _array [[==]] 0) [[or]] {(_array [[select]] 0) [[!=]] [[player]]}) [[then]] {[[hint]] "It works! Without lazy evaluation it would throw an error if array was empty."}</code> |= | |x2= <code>[[if]] (([[count]] _array [[==]] 0) [[or]] {(_array [[select]] 0) [[!=]] [[player]]}) [[then]] {[[hint]] "It works! Without lazy evaluation it would throw an error if array was empty."}</code> |EXAMPLE2= | ||
____________________________________________________________________________________________ | ____________________________________________________________________________________________ | ||
| [[a or b|a <nowiki>||</nowiki> b]], [[and]], [[Operators]]|= | | [[a or b|a <nowiki>||</nowiki> b]], [[and]], [[Operators]]|SEEALSO= | ||
|mp= no special considerations|= | |mp= no special considerations|= | ||
}} | }} | ||
Revision as of 14:44, 7 April 2019
Description
- Description:
- Returns true only if one or both conditions are true. In case of the alternative syntax, lazy evaluation is used (if left operand is true, evaluation of the right side is skipped completely). Identical to: a || b
- Multiplayer:
- no special considerations
- Groups:
- Uncategorised
Syntax
- Syntax:
- Boolean = a or b
- Parameters:
- a: Boolean - Test condition or variable that returns Boolean.
- b: Boolean - Test condition or variable that returns Boolean.
- Return Value:
- Boolean
Alternative Syntax
- Syntax:
- Boolean = a or b (Only available since ArmA 2:OA v1.62.)
- Parameters:
- a: Boolean - Test condition or variable that returns Boolean.
- b: Code - Code that returns Boolean. It is not evaluated if a returns as true.
- Return Value:
- Boolean
Examples
- Example 1:
if ((OBJ1) or (_enemycount == 0)) then {hint "you win !"}- Example 2:
if ((count _array == 0) or {(_array select 0) != player}) then {hint "It works! Without lazy evaluation it would throw an error if array was empty."}
Additional Information
Notes
-
Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note
Notes
Bottom Section
- Posted on March 29, 2015 - 13:07 (UTC)
- IT07
- The examples suggest that you can only use two conditions with or. You can use more if you want. It is not recommended to use a lot of conditions because the check will take longer to complete.
Categories:
- Scripting Commands
- Introduced with Operation Flashpoint version 1.00
- Operation Flashpoint: New Scripting Commands
- Operation Flashpoint: Scripting Commands
- Command Group: Uncategorised
- Scripting Commands OFP 1.99
- Scripting Commands OFP 1.96
- Scripting Commands OFP 1.46
- Scripting Commands ArmA
- Scripting Commands ArmA2
- Scripting Commands Arma 3
- Scripting Commands Take On Helicopters