a != b: Difference between revisions

Latest revision as of 09:00, 1 January 2026

1.00

1.50

1.00

0.50

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Description

Description:: Returns whether one value is not equal to another. String comparison is case-insensitive (e.g "STRINGtext" != "stringTEXT" // returns false - strings are equivalent).
⚠
a and b types must match: comparing e.g String with Number is invalid.
Groups:: Variables Math

Syntax

Syntax:

a != b

Parameters:

a:

Introduced in	Possible Type
1.00	Number
	Side
	String
	Object
	Group
1.00	Structured Text
	Config
	Display
	Control
1.08	Location
2.00	Diary Record
	Namespace
	Boolean

b: identical to a's type

Return Value:

Boolean - true if a is different from b, false otherwise

Examples

Example 1:: if (_counter != 4) then { hint "The counter is not equal to the number 4"; };
Example 2:: if (vehicle player != player) then { hint "you are in a vehicle"; } else { hint "you are on foot"; };
Example 3:: if (fuel truck1 != 1) then { hint "Truck1 has less than a full tank of fuel."; };
Example 4:: if (alive _unit1 != alive _unit2) then { hint "One of the units is dead while another is alive" };

Additional Information

See also:: == Operators

Notes

: Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord.
Only post proven facts here! Add Note

@@ Line 27: / Line 27: @@
 |gr2= Math
-|descr= Returns whether one value is '''not''' equal to another. String comparison is case-'''in'''sensitive (e.g {{ic|"STRINGtext" [[a != b|!=]] "stringTEXT" {{cc|returns [[false]]}}}}).
+|descr= Returns whether one value is '''not''' equal to another. String comparison is case-'''in'''sensitive (e.g <sqf inline>"STRINGtext" != "stringTEXT" // returns false - strings are equivalent</sqf>).
-{{Feature | Informative | Before Arma 3 v2.00 one was '''not''' able to compare [[Boolean]]s: {{ic|[[alive]] [[player]] [[a != b|!=]] [[true]] {{cc|would throw an error}}}}}}
+{{Feature|important|''a'' and ''b'' types '''must''' match: comparing e.g [[String]] with [[Number]] is invalid.}}
 |s1= a [[a != b|!=]] b
-|p1= a: [[Number]], [[Side]], [[String]], [[Object]], [[Group]], [[Structured Text]], [[Config]], [[Display]], [[Control]], [[Location]], [[Diary Record]] (since Arma 3 v2.00), [[Namespace]] (since Arma 3 v2.00), [[Boolean]] (since Arma 3 v2.00)
+|p1= a:
+<table class="wikitable">
+<tr>
+<th>Introduced in</th>
+<th>Possible Type</th>
+</tr>
+<tr>
+<td rowspan="5">{{GVI|ofp|1.00}}</td>
+<td>Number</td>
+</tr>
+<tr><td>Side</td></tr>
+<tr><td>String</td></tr>
+<tr><td>Object</td></tr>
+<tr><td>Group</td></tr>
+<tr>
+<td rowspan="4">{{GVI|arma1|1.00}}</td>
+<td>Structured Text</td>
+</tr>
+<tr><td>Config</td></tr>
+<tr><td>Display</td></tr>
+<tr><td>Control</td></tr>
+<tr>
+<td rowspan="1">{{GVI|arma1|1.08}}</td>
+<td>Location</td>
+</tr>
+<tr>
+<td rowspan="3">{{GVI|arma3|2.00}}</td>
+<td>Diary Record</td>
+</tr>
+<tr><td>Namespace</td></tr>
+<tr><td>Boolean</td></tr>
+</table>
-|p2= b: [[Number]], [[Side]], [[String]], [[Object]], [[Group]], [[Structured Text]], [[Config]], [[Display]], [[Control]], [[Location]], [[Diary Record]] (since Arma 3 v2.00), [[Namespace]] (since Arma 3 v2.00), [[Boolean]] (since Arma 3 v2.00)
-|r1= [[Boolean]] - [[true]] if a is different from b
+|p2= b: identical to ''a''<nowiki/>'s type
-|x1= <code>[[if]] (_counter [[a != b|!=]] 4) [[then]] {
+|r1= [[Boolean]] - [[true]] if ''a'' is different from ''b'', [[false]] otherwise
-	[[hint]] "The counter is not equal to the number 4";
-}</code>
-|x2= <code>[[if]] ([[vehicle]] [[player]] [[a != b|!=]] [[player]]) [[then]] {
+|x1= <sqf>
-	[[hint]] "you are in a vehicle";
+if (_counter != 4) then
-} [[else]] {
+{
-	[[hint]] "you are on foot";
+	hint "The counter is not equal to the number 4";
-}</code>
+};
+</sqf>
-|x3= <code>[[if]] ([[fuel]] truck1 [[a != b|!=]] 1) [[then]] {
+|x2= <sqf>
-	[[hint]] "Truck1 has less than a full tank of fuel.";
+if (vehicle player != player) then
-}</code>
+{
+	hint "you are in a vehicle";
+}
+else
+{
+	hint "you are on foot";
+};
+</sqf>
-|x4 = Since Arma 3 v2.00<code>[[if]] ([[alive]] _unit1 [[!=]] [[alive]] _unit2) [[then]] {[[hint]] "One of the units is dead while another is alive"};</code>
+|x3= <sqf>
+if (fuel truck1 != 1) then
+{
+	hint "Truck1 has less than a full tank of fuel.";
+};
+</sqf>
-|seealso= [[==]], [[Operators]]
+|x4= <sqf>if (alive _unit1 != alive _unit2) then { hint "One of the units is dead while another is alive" };</sqf>
+|seealso= [[==]] [[Operators]]
 }}
-{{GameCategory|arma1|Scripting Commands}}
-{{GameCategory|arma2|Scripting Commands}}
-{{GameCategory|arma3|Scripting Commands}}