a or b: Difference between revisions

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m (Text replacement - " *\| *([Cc]omments|COMMENTS|Game|[Gg]ame [Nn]ame|Game [Vv]ersion|Game Version \(number surrounded by NO SPACES\)|Multiplayer Arguments \("local" or "global"\)|Multiplayer Effects \("local" or "global"\)|Multiplayer Execution \("serv...)
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{{Command|Comments=
{{Command


| ofp |Game name=
| ofp


|1.00|Game version=
|1.00


|gr1= Math |GROUP1=
|gr1= Math


|gr2= Variables |GROUP2=
|gr2= Variables


| 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 [[or]] b |DESCRIPTION=
Identical to: a [[or]] b


| a '''{{!}}{{!}}''' b |SYNTAX=
| a '''{{!}}{{!}}''' b


|p1= a: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |PARAMETER1=
|p1= a: [[Boolean]] - Test condition or variable that returns [[Boolean]].


|p2= b: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |PARAMETER2=
|p2= b: [[Boolean]] - Test condition or variable that returns [[Boolean]].


| [[Boolean]] |RETURNVALUE=
| [[Boolean]]


|s2= a '''{{!}}{{!}}''' b {{Since|arma2oa|1.62|y}} |SYNTAX2=
|s2= a '''{{!}}{{!}}''' b {{Since|arma2oa|1.62|y}}


|p21= a: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |PARAMETER21=
|p21= a: [[Boolean]] - Test condition or variable that returns [[Boolean]]. |PARAMETER21=
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|p22= b: [[Code]] - code that returns [[Boolean]]. It is not evaluated if ''a'' returns [[true]]. |PARAMETER22=
|p22= b: [[Code]] - code that returns [[Boolean]]. It is not evaluated if ''a'' returns [[true]]. |PARAMETER22=


|r2= [[Boolean]] |RETURNVALUE2=
|r2= [[Boolean]]


|x1= <code>[[if]] ((OBJ1) {{!}}{{!}} (_enemycount == 0)) then {[[hint]] "you win !"}</code> |EXAMPLE1=
|x1= <code>[[if]] ((OBJ1) {{!}}{{!}} (_enemycount == 0)) then {[[hint]] "you win !"}</code>


|x2= <code>[[if]] (([[count]] _array == 0) {{!}}{{!}} {(_array [[select]] 0) != [[player]]}) then
|x2= <code>[[if]] (([[count]] _array == 0) {{!}}{{!}} {(_array [[select]] 0) != [[player]]}) then
{
{
[[hint]] "It works! Without lazy evaluation it would throw an error if array was empty.";
[[hint]] "It works! Without lazy evaluation it would throw an error if array was empty.";
};</code> |EXAMPLE2=
};</code>


| [[or]], [[and]], [[Operators]] |SEEALSO=
| [[or]], [[and]], [[Operators]]
}}
}}


Revision as of 00:04, 18 January 2021

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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 or b
Groups:
MathVariables

Syntax

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

Examples

Example 1:
if ((OBJ1) || (_enemycount == 0)) then {hint "you win !"}
Example 2:
if ((count _array == 0) || {(_array select 0) != player}) then { hint "It works! Without lazy evaluation it would throw an error if array was empty."; };

Additional Information

See also:
orandOperators

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

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