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<dd class="notedate">Posted on April 3, 2019 - 00:39 (UTC)</dd> | <dd class="notedate">Posted on April 3, 2019 - 00:39 (UTC)</dd> | ||
<dt class="note">[[User: | <dt class="note">[[User:DreadedEntity|DreadedEntity]]</dt> | ||
<dd class="note"> | <dd class="note"> | ||
[[params|Params]] really shines when used in | [[params|Params]] really shines when used in {{Link|https://en.wikipedia.org/wiki/Recursion_(computer_science)|recursive}} functions. | ||
<code>_myTestVar = 0; | <code style="display: block">_myTestVar = 0; | ||
[[systemChat]] [[str]] _myTestVar; | [[systemChat]] [[str]] _myTestVar; | ||
_myTestVar [[call]] { | _myTestVar [[call]] { | ||
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[[systemChat]] [[str]] _myTestVar;</code> | [[systemChat]] [[str]] _myTestVar;</code> | ||
Outputs '''0 2''' | Outputs '''0 2''' | ||
<code>0 [[params]] ["_myTestVar"]; | <code style="display: block">0 [[params]] ["_myTestVar"]; | ||
[[systemChat]] [[str]] _myTestVar; | [[systemChat]] [[str]] _myTestVar; | ||
_myTestVar [[call]] { | _myTestVar [[call]] { | ||
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[[systemChat]] [[str]] _myTestVar;</code> | [[systemChat]] [[str]] _myTestVar;</code> | ||
Outputs '''0 0'''<br> | Outputs '''0 0'''<br> | ||
This happens because of the cascading nature of | This happens because of the cascading nature of {{Link|https://en.wikipedia.org/wiki/Recursion_(computer_science)|recursion}}, inner-level functions create variables of the same name, thus they are of the same name and a lower scope, therefore the engine treats them as though they are the same variable. [[params|Params]] gets around this, most likely, by creating a new, unique application-level variable under the hood, despite being of the same name. | ||
</dd> | </dd> | ||
</dl> | </dl> | ||
Latest revision as of 00:48, 24 February 2023
If expectedDataTypes is excluded does the command use the default value as the expected data type? --SS (talk) 03:01, 17 July 2015 (CEST)
- Posted on April 3, 2019 - 00:39 (UTC)
- DreadedEntity
-
Params really shines when used in recursive functions.
_myTestVar = 0; systemChat str _myTestVar; _myTestVar call { _myTestVar = _this + 1; _myTestVar call { _myTestVar = _this + 1; } }; systemChat str _myTestVar;Outputs 0 20 params ["_myTestVar"]; systemChat str _myTestVar; _myTestVar call { (_this + 1) params ["_myTestVar"]; _myTestVar call { (_this + 1) params ["_myTestVar"]; } }; systemChat str _myTestVar;Outputs 0 0
This happens because of the cascading nature of recursion, inner-level functions create variables of the same name, thus they are of the same name and a lower scope, therefore the engine treats them as though they are the same variable. Params gets around this, most likely, by creating a new, unique application-level variable under the hood, despite being of the same name.