or: Difference between revisions

From Bohemia Interactive Community
Jump to navigation Jump to search
m (Text replacement - "|= Comments" to "|Comments=")
m (Text replacement - "<sqf>([^↵][^<]*↵[^<]*)<\/sqf>" to "<sqf> $1 </sqf>")
 
(58 intermediate revisions by 2 users not shown)
Line 1: Line 1:
{{Command|Comments=
{{RV|type=command
____________________________________________________________________________________________


| ofp |= Game name
|game1= ofp
|version1= 1.00


|1.00|= Game version
|game2= ofpe
____________________________________________________________________________________________
|version2= 1.00


| 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).
|game3= arma1
|version3= 1.00


Identical to: a [[a or b| || ]] b |DESCRIPTION=
|game4= arma2
____________________________________________________________________________________________
|version4= 1.00


| [[Boolean]] <nowiki>=</nowiki> a '''or''' b |SYNTAX=
|game5= arma2oa
|p1= a: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |PARAMETER1=
|version5= 1.50
|p2= b: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |PARAMETER2=
| [[Boolean]] |RETURNVALUE=


|game6= tkoh
|version6= 1.00


|game7= arma3
|version7= 0.50


|s2= [[Boolean]] <nowiki>=</nowiki> a '''or''' b (''Only available since ArmA 2:OA v1.62.'') |SYNTAX=
|gr1= Math
|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]]. |PARAMETER2=
|r2= [[Boolean]] |RETURNVALUE=
____________________________________________________________________________________________


|x1= <code>[[if]] ((OBJ1) [[or]] (_enemycount [[==]] 0)) [[then]] {[[hint]] "you win !"}</code> |EXAMPLE1=
|gr2= Variables
|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]]|SEEALSO=
|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.
|mp= no special considerations|=
 
}}
|alias = [[a or b|a || b]]
 
|s1= a [[or]] b
 
|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


<h3 style="display:none">Notes</h3>
|p22= b: [[Code]] - code that returns [[Boolean]]. It is not evaluated if ''a'' returns [[true]]
<dl class="command_description">
<!-- Note Section BEGIN -->


<!-- Note Section END -->
|r2= [[Boolean]]
</dl>


<h3 style="display:none">Bottom Section</h3>
|x1= <sqf>if (_obj1 or (_enemycount == 0) or (not alive _enemyGeneral)) then { hint "you win !"; };</sqf>


[[Category:Scripting Commands|OR]]
|x2= <sqf>
[[Category:Scripting Commands OFP 1.99|{{uc:{{PAGENAME}}}}]]
// without lazy evaluation, select would throw an error in the event of an empty array
[[Category:Scripting Commands OFP 1.96|OR]]
if ((count _array == 0) or { (_array select 0) != player }) then
[[Category:Scripting Commands OFP 1.46|OR]]
{
[[Category:Scripting Commands ArmA|OR]]
hint "It works!";
[[Category:Scripting Commands ArmA2|{{uc:{{PAGENAME}}}}]]
};
[[Category:Scripting Commands Arma 3|{{uc:{{PAGENAME}}}}]]
</sqf>
[[Category:Scripting_Commands_Take_On_Helicopters|{{uc:{{PAGENAME}}}}]]


<!-- CONTINUE Notes -->
|seealso= [[a or b|a || b]] [[and]] [[Operators]]
<dl class="command_description">
}}
<dd class="notedate">Posted on March 29, 2015 - 13:07 (UTC)</dd>
<dt class="note">[[User:IT07|IT07]]</dt>
<dd class="note">
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.
</dd>
</dl>
<!-- DISCONTINUE Notes -->

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"