or: Difference between revisions

From Bohemia Interactive Community
Jump to navigation Jump to search
No edit summary
m (Text replacement - "<sqf>([^↵][^<]*↵[^<]*)<\/sqf>" to "<sqf> $1 </sqf>")
 
(88 intermediate revisions by 19 users not shown)
Line 1: Line 1:
[[Category:Scripting Commands|O]]
{{RV|type=command
[[Category:Scripting Commands OFP 1.97|O]]
[[Category:Scripting Commands OFP 1.46|O]]
[[Category:Scripting Commands ArmA|O]]


|game1= ofp
|version1= 1.00


<h2 style="color:#000066">''a '''''or ''b'''''</h2>
|game2= ofpe
|version2= 1.00


|game3= arma1
|version3= 1.00


'''Operand types:'''
|game4= arma2
|version4= 1.00


'''a:''' [[Boolean]]
|game5= arma2oa
|version5= 1.50


'''b:''' [[Boolean]]
|game6= tkoh
|version6= 1.00


'''Type of returned value:'''
|game7= arma3
|version7= 0.50


[[Boolean]]
|gr1= Math


'''Description:'''
|gr2= Variables


a '''or'''  b
|descr= Returns [[true]] if one or both conditions are [[true]]. In case of the alternative syntax, {{Link|https://en.wikipedia.org/wiki/Lazy_evaluation#Control_structures|lazy evaluation}} is used. That means that if left operand is [[true]], evaluation of the right side is skipped completely.


|alias = [[a or b|a || b]]


'''Example:'''
|s1= a [[or]] b


[[not]] [[alive]] [[player]] '''or''' [[not]] [[alive]] [[leader]] [[player]]
|p1= a: [[Boolean]] - test condition or variable
 
|p2= b: [[Boolean]] - test condition or variable
 
|r1= [[Boolean]]
 
|s2= a [[or]] b
 
|s2since= arma2oa 1.62
 
|p21= a: [[Boolean]] - test condition or variable
 
|p22= b: [[Code]] - code that returns [[Boolean]]. It is not evaluated if ''a'' returns [[true]]
 
|r2= [[Boolean]]
 
|x1= <sqf>if (_obj1 or (_enemycount == 0) or (not alive _enemyGeneral)) then { hint "you win !"; };</sqf>
 
|x2= <sqf>
// without lazy evaluation, select would throw an error in the event of an empty array
if ((count _array == 0) or { (_array select 0) != player }) then
{
hint "It works!";
};
</sqf>
 
|seealso= [[a or b|a || b]] [[and]] [[Operators]]
}}

Latest revision as of 19:42, 3 September 2024

Logo A0.png1.00ofpe logo.png1.00Logo A1 black.png1.00Logo A2.png1.00A2 OA Logo.png1.50tkoh logo small.png1.00Arma 3 logo black.png0.50
Hover & click on the images for description

Description

Description:
Returns true if one or both conditions are true. In case of the alternative syntax, lazy evaluation is used. That means that if left operand is true, evaluation of the right side is skipped completely.
Alias:
a || b
Groups:
MathVariables

Syntax

Syntax:
a or b
Parameters:
a: Boolean - test condition or variable
b: Boolean - test condition or variable
Return Value:
Boolean

Alternative Syntax

Syntax:
a or b
Parameters:
a: Boolean - test condition or variable
b: Code - code that returns Boolean. It is not evaluated if a returns true
Return Value:
Boolean

Examples

Example 1:
if (_obj1 or (_enemycount == 0) or (not alive _enemyGeneral)) then { hint "you win !"; };
Example 2:
// without lazy evaluation, select would throw an error in the event of an empty array if ((count _array == 0) or { (_array select 0) != player }) then { hint "It works!"; };

Additional Information

See also:
a || b and Operators

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
Retrieved from "https://community.bistudio.com/wiki?title=or&oldid=369315"