isEqualTo: Difference between revisions

Revision as of 12:37, 21 May 2015

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Description:

Performs strict comparison between var1 and var2 and returns true if equal otherwise false.

Some differences between == and isEqualTo:

Performs case sensitive comparison on Strings
Doesn't throw error when comparing different types, i.e. ("eleven" isEqualTo 11)
Can compare Arrays and Booleans

Groups:

Uncategorised

Example 1:: _arr1 = [1,[2,[3]]]; _arr2 = [1,[2,[3]]]; if (_arr1 isEqualTo _arr2) then {hint "Arrays match!"}
Example 2:: if (a isEqualTo b) then {hint "a is equal to b"}; if !(a isEqualTo b) then {hint "a is not equal to b"};

: 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

Posted on July 19, 2014 - 19:48 (UTC)
AgentRevolution: The behavior of "var1 isEqualTo var2" is pretty much equivalent to "var1 in [var2]", plus the ability to compare arrays, and slightly better performance.

Posted on December 3, 2014 - 13:11 (UTC)
Tajin: Simply put, "isEqualTo" is a binary comparison. Therefor it is very fast but only accepts 100% identical matches. In some other languages this is known as "===" instead of "==".

Posted on May 21, 2015 - 11:26 (UTC)
Killzone Kid: A faster, case-sensitive alternative to BIS_fnc_areEqual using isEqualTo: KK_fnc_allEqual = { private ["_arr", "_first"]; _arr = []; _first = _this select 0; for "_i" from 0 to count _this - 1 do { _arr pushBack _first; }; _arr isEqualTo _this }; // Example [[1,2],[1,2],[1,3]] call KK_fnc_allEqual; //false

@@ Line 39: / Line 39: @@
 <h3 style="display:none">Notes</h3>
 <dl class="command_description">
-<!-- Note Section BEGIN -->
-<dd class="notedate">Posted on Apr 15, 2014 - 16:24
-<dt class="note">'''[[User:ffur2007slx2_5|ffur2007slx2_5]]'''<dd class="note">
-(ArmA3 1.16) for multiple comparisons, we can use the example below for more accurate compare than [[BIS_fnc_arrayCompare]] or [[BIS_fnc_areEqual]]:
-<code>
-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
-["A","a","a"] [[call]] [[BIS_fnc_areEqual]]; // true
-</code>
-<!-- Note Section END -->
 </dl>