a == b: Difference between revisions

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|r1= [[Boolean]]
|r1= [[Boolean]]


|x1= <code>[[if]] ([[player]] [[a == b|==]] [[leader]] [[group]] [[player]]) [[then]]
|x1= <sqf>if (player == leader group player) then
{
{
[[hint]] "You are the leader of your group.";
hint "You are the leader of your group.";
}
}
[[else]]
else
{
{
[[hint]] "Someone else is the boss";
hint "Someone else is the boss";
};</code>
};</sqf>


|x2= <code>"MyRabbit" [[a == b|==]] "MYRABBIT"; {{cc|returns true}}</code>
|x2= <sqf>"MyRabbit" == "MYRABBIT"; // returns true</sqf>


|x3= <code>if (alive _unit1 [[a == b|==]] [[alive]] _unit2) [[then]] { [[hint]] "Both units are either dead or both alive" };</code>
|x3= <sqf>if (alive _unit1 == alive _unit2) then { hint "Both units are either dead or both alive" };</sqf>


|seealso= [[a != b|!=]] [[Operators]] [[isEqualTo]]
|seealso= [[a != b|!=]] [[Operators]] [[isEqualTo]]
}}
}}


<dl class="command_description">
{{Note
 
|user= ffur2007slx2_5
<dt></dt>
|timestamp= 20140415101300
<dd class="notedate">Posted on Apr 15, 2014 - 15:34</dd>
|text= For script comparison we need to detect whether scripts are running in advance, then compose both into string:
<dt class="note">[[User:ffur2007slx2_5|ffur2007slx2_5]]</dt>
<sqf>if (scriptDone _var0) then [{false},{(str _var0) == (str _var1)}];</sqf>
<dd class="note">
For script comparison we need to detect whether scripts are running in advance, then compose both into string:
<code>if (scriptDone _var0) [[then]] [{[[false]]},{([[str]] _var0) == ([[str]] _var1)}];</code>
   
   
It is recommended to use [[isEqualTo]] for all types comparison, which is more functional and as fast as operator.
It is recommended to use [[isEqualTo]] for all types comparison, which is more functional and as fast as operator.
For multiple comparisons:
For multiple comparisons:
<code>fnc_areEqual = {
<sqf>fnc_areEqual = {
[[private]] ["_b", "_var1", "_var2"];
private ["_b", "_var1", "_var2"];
_b = [[true]];
_b = true;
[[for]] [{ _i = 1 }, { _i < ([[count]] _this) && _b }, { _i=_i + 1 }] [[do]] {
for [{ _i = 1 }, { _i < (count _this) && _b }, { _i=_i + 1 }] do {
_var1 = _this [[select]] (_i-1);
_var1 = _this select (_i-1);
_var2 = _this [[select]] _i;
_var2 = _this select _i;
[[if]] (!(_var1 [[isEqualTo]] _var2)) [[then]] { _b = [[false]]; };
if (!(_var1 isEqualTo _var2)) then { _b = false; };
};
};
_b
_b
};
};
["A","a","a"] [[call]] fnc_areEqual; {{cc|false}}</code>
["A","a","a"] call fnc_areEqual; // false
</sqf>
And we can use such workaround instead of using [[BIS_fnc_arrayCompare]] or [[BIS_fnc_areEqual]]
And we can use such workaround instead of using [[BIS_fnc_arrayCompare]] or [[BIS_fnc_areEqual]]
</dd>
}}


</dl>
</dl>

Latest revision as of 00:57, 14 May 2023

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:
Check if a is equal to b. String comparison is case-insensitive - use isEqualTo if case sensitivity is needed.
⚠
a and b types must match: comparing e.g String with Number is invalid.
Groups:
MathVariables

Syntax

Syntax:
a == b
Parameters:
a:
Introduced in Logo A0.png1.00 Logo A1 black.png1.00 Logo A1 black.png1.08 Arma 3 logo black.png2.00
Possible Type Number Side String Object Group Structured Text Config Display Control Location Diary Record Namespace Boolean
b: identical to a's type
Return Value:
Boolean

Examples

Example 1:
if (player == leader group player) then { hint "You are the leader of your group."; } else { hint "Someone else is the boss"; };
Example 2:
"MyRabbit" == "MYRABBIT"; // returns true
Example 3:
if (alive _unit1 == alive _unit2) then { hint "Both units are either dead or both alive" };

Additional Information

See also:
!= Operators isEqualTo

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
ffur2007slx2_5 - c
Posted on Apr 15, 2014 - 10:13 (UTC)
For script comparison we need to detect whether scripts are running in advance, then compose both into string:
if (scriptDone _var0) then [{false},{(str _var0) == (str _var1)}];
It is recommended to use isEqualTo for all types comparison, which is more functional and as fast as operator. For multiple comparisons:
fnc_areEqual = { private ["_b", "_var1", "_var2"]; _b = true; for [{ _i = 1 }, { _i < (count _this) && _b }, { _i=_i + 1 }] do { _var1 = _this select (_i-1); _var2 = _this select _i; if (!(_var1 isEqualTo _var2)) then { _b = false; }; }; _b }; ["A","a","a"] call fnc_areEqual; // false
And we can use such workaround instead of using BIS_fnc_arrayCompare or BIS_fnc_areEqual
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