a && b: Difference between revisions
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{{Command|Comments= | {{Command|Comments= | ||
| ofp |Game Name= | | ofp |Game Name= | ||
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|gr1= Math |GROUP1= | |gr1= Math |GROUP1= | ||
|gr2= Variables |GROUP2= | |gr2= Variables |GROUP2= | ||
| Returns [[true]] only if 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 [[false]], evaluation of the right side is skipped completely). | | Returns [[true]] only if 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 [[false]], evaluation of the right side is skipped completely). | ||
{{Informative | This command is identical to the [[and]] command.}} |DESCRIPTION= | {{Informative | This command is identical to the [[and]] command.}} |DESCRIPTION= | ||
| booleanA [[a && b|&&]] booleanB |SYNTAX= | | booleanA [[a && b|&&]] booleanB |SYNTAX= | ||
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| [[Boolean]] |RETURNVALUE= | | [[Boolean]] |RETURNVALUE= | ||
|s2= boolean [[a && b|&&]] code {{Since|arma2oa|1.62|y}} |SYNTAX2= | |s2= boolean [[a && b|&&]] code {{Since|arma2oa|1.62|y}} |SYNTAX2= | ||
| Line 31: | Line 27: | ||
|r2= [[Boolean]] |RETURNVALUE2= | |r2= [[Boolean]] |RETURNVALUE2= | ||
|x1= <code>[[private]] _allEnemiesKilled = [[true]]; | |x1= <code>[[private]] _allEnemiesKilled = [[true]]; | ||
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[[hint]] "It works!"; | [[hint]] "It works!"; | ||
};</code> |EXAMPLE3= | };</code> |EXAMPLE3= | ||
| [[and]], [[or]], [[Operators]] |SEEALSO= | | [[and]], [[or]], [[Operators]] |SEEALSO= | ||
Revision as of 00:00, 17 January 2021
Description
- Description:
- Returns true only if both conditions are true. In case of the alternative syntax, lazy evaluation is used (if left operand is false, evaluation of the right side is skipped completely).
- Groups:
- MathVariables
Syntax
- Syntax:
- booleanA && booleanB
- Parameters:
- booleanA: Boolean - test condition or variable
- booleanB: Boolean - test condition or variable
- Return Value:
- Boolean
Alternative Syntax
- Syntax:
- boolean && code Template:Since
- Parameters:
- boolean: Boolean - test condition or variable
- code: Code - code that once executed returns a Boolean. The code is not evaluated if boolean is false.
- Return Value:
- Boolean
Examples
- Example 1:
private _allEnemiesKilled = true; if (alive player && _allEnemiesKilled) then { hint "you win !"; };- Example 2:
if ((count _array > 0) && { (_array select 0) == player }) then // an error would be thrown without lazy evaluation { hint "It works!"; };- Example 3:
if ((alive player) && { player setDamage 0.5; true }) then // valid as long as the code block returns a Boolean { hint "It works!"; };
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
Categories:
- Scripting Commands
- Introduced with Operation Flashpoint version 1.00
- Operation Flashpoint: New Scripting Commands
- Operation Flashpoint: Scripting Commands
- Command Group: Math
- Command Group: Variables
- Scripting Commands OFP 1.46
- Scripting Commands OFP 1.96
- Scripting Commands OFP 1.99
- ArmA: Armed Assault: Scripting Commands
- Arma 2: Scripting Commands
- Arma 3: Scripting Commands
- Take On Helicopters: Scripting Commands