a == b: Difference between revisions

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m (Bot: Reverted to revision 109470 by killzone_kid on 2018-10-07T18:01:09Z)
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{{Command|= Comments
{{Command|Comments=
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| ofp |= Game name
| ofp |Game name=


|1.00|= Game version
|1.00|Game version=
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| Checks if argument <tt>a</tt> is equal to argument <tt>b</tt>. Both arguments need to be of the same [[Data Types | type]]. String comparison is case-insensitive. If you need case-sensitive comparison use [[isEqualTo]] command. |= Description
| Check if argument <tt>a</tt> is equal to argument <tt>b</tt>.
Both arguments need to be of the same [[Data Types|type]].
{{Informative|Please note that [[String]] comparison is '''case-insensitive'''.<br />
If you need case-sensitive comparison, use [[isEqualTo]].}} |Description=
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| a <nowiki>==</nowiki> b |= Syntax
| a '''==''' b |Syntax=


|p1 = a: [[Number]], [[String]]|=
|p1 = a: [[Number]], [[String]], [[Group]], [[Side]], [[Object]], [[Structured Text]], [[Config]], [[Display]], [[Control]], [[Location]] |Parameter 1=


|p2 = b: [[Number]], [[String]]|=
|p2 = b: [[Number]], [[String]], [[Group]], [[Side]], [[Object]], [[Structured Text]], [[Config]], [[Display]], [[Control]], [[Location]] |Parameter 2=
| [[Boolean]] |= Return value


| s2=a <nowiki>==</nowiki> b |= Syntax
| [[Boolean]] |Return value=
 
|p21 = a: [[Group]], [[Side]], [[Object]], [[Structured Text]], [[Config]], [[Display]], [[Control]], [[Location]]|=
 
|p22 = b: [[Group]], [[Side]], [[Object]], [[Structured Text]], [[Config]], [[Display]], [[Control]], [[Location]]|=
|r2= [[Boolean]] |= Return value
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|x1 = <code>[[if]] ([[player]] <nowiki>==</nowiki> [[leader|leader]] [[group]] [[player]]) [[then]]  
|x1 = <code>[[if]] ([[player]] == [[leader]] [[group]] [[player]]) [[then]] {
{
[[hint]] "You are the leader of your group.";
<nowiki>    </nowiki>[[hint]] "You are the leader of your group."
} [[else]] {
} [[else]] {
<nowiki>    </nowiki>[[hint]] "Someone else is the boss"
[[hint]] "Someone else is the boss";
} </code> |=
};</code> |Example 1=


|x2 = <code>? [[name]] [[player]] <nowiki>==</nowiki> "Billy" : [[hint]] "Hello Billy, how are you?"</code> |=
|x2 = <code>"MyRabbit" == "MYRABBIT"; {{codecomment|// returns true}}</code> |Example 2=
 
| [[Operators]], [[isEqualTo]] |= See also


| [[Operators]], [[isEqualTo]] |See also=
}}
}}


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<dl class="command_description">
<dl class="command_description">
<!-- Note Section BEGIN -->
<!-- Note Section BEGIN -->
<dd class="notedate">Posted on Feb 5, 2007 - 10:38
<dt class="note">'''[[User:Ceeeb|Ceeeb]]'''<dd class="note">
In '''OFP v1.96''', comparison of [[String|strings]] is not case sensitive. ''Example : "STRINGtext" == "stringTEXT" returns [[true]].''
<dd class="notedate">Posted on Apr 15, 2014 - 15:34
<dd class="notedate">Posted on Apr 15, 2014 - 15:34
<dt class="note">'''[[User:ffur2007slx2_5|ffur2007slx2_5]]'''<dd class="note">
<dt class="note">[[User:ffur2007slx2_5|ffur2007slx2_5]]
(A3 1.16) for case sensitive comparison, array comparison and boolean comparison we can use [[switch do]]. e.g.
<dd class="note">
<code>
[[switch]] (_var0) [[do]] {
        [[case]] (_var1) : {[[true]]};
        [[default]] {[[false]]};
      };
</code>
For script comparison we need to detect whether scripts are running in advance, then compose both into string:
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>
[[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.
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>
<code>
fnc_areEqual = {
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; // false
["A","a","a"] [[call]] fnc_areEqual; {{codecomment|// false}}
</code>
</code>
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]]

Revision as of 00:27, 29 January 2019

Logo A0.png1.00
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Description

Description:
Check if argument a is equal to argument b. Both arguments need to be of the same type.
ⓘ
Please note that String comparison is case-insensitive.
If you need case-sensitive comparison, use isEqualTo.
Groups:
Uncategorised

Syntax

Syntax:
Boolean
Parameters:
a: Number, String, Group, Side, Object, Structured Text, Config, Display, Control, Location
b: Number, String, Group, Side, Object, Structured Text, Config, Display, Control, Location
Return Value:
Operators, isEqualTo

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

Additional Information

See also:
See also needed

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

Notes

Posted on Apr 15, 2014 - 15:34
ffur2007slx2_5
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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