and: Difference between revisions

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m (Text replacement - "\|x([0-9])= *<code>([^<]*)<\/code>" to "|x$1= <sqf>$2</sqf>")
m (Some wiki formatting)
Line 33: Line 33:
|s1= a [[and]] b
|s1= a [[and]] b


|p1= a: [[Boolean]] - Test condition or variable
|p1= a: [[Boolean]] - test condition or variable


|p2= b: [[Boolean]] - Test condition or variable
|p2= b: [[Boolean]] - test condition or variable


|r1= [[Boolean]]
|r1= [[Boolean]]
Line 49: Line 49:
|r2= [[Boolean]]
|r2= [[Boolean]]


|x1= <sqf>if ((not isNull player) and (alive player) and (_enemycount == 0)) then
|x1= <sqf>
if ((not isNull player) and (alive player) and (_enemycount == 0)) then
{
{
hint "you win !";
hint "you win !";
};</sqf>
};
</sqf>


|x2= <sqf>if ((count _array > 0) and { (_array select 0) == player }) then // works as expected
|x2= <sqf>
if ((count _array > 0) and { (_array select 0) == player }) then // works as expected
{
{
hint "It works!";
hint "It works!";
};
};


if ((count _array > 0) and (_array select 0) == player) then // Error: {{ic|_array select 0 is evaluated}}
if ((count _array > 0) and (_array select 0) == player) then // Error: _array select 0 is evaluated
{
{
hint "It... works?";
hint "It... works?";
};</sqf>
};
</sqf>


|seealso= [[a && b]] [[or]] [[Operators]]
|seealso= [[a && b]] [[or]] [[Operators]]
}}
}}

Revision as of 23:03, 29 June 2022

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 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 ignored.
Alias:
a && b
Groups:
VariablesMath

Syntax

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

Alternative Syntax

Syntax:
a and b
Parameters:
a: Boolean - Test condition or variable
b: Code - Code that returns Boolean. It is not evaluated if a is false
Return Value:
Boolean

Examples

Example 1:
if ((not isNull player) and (alive player) and (_enemycount == 0)) then { hint "you win !"; };
Example 2:
if ((count _array > 0) and { (_array select 0) == player }) then // works as expected { hint "It works!"; }; if ((count _array > 0) and (_array select 0) == player) then // Error: _array select 0 is evaluated { hint "It... works?"; };

Additional Information

See also:
a && b or 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
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