Array+=: Difference between revisions

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{{unbalanced}}
{{GVI|arma3|0.50}} same-file support<!-- in 2011 --><br>
The array[]+={} syntax for Arma 3 was introduced as an attempt to add unique weapons (or magazines) to a unit without the tedium of duplicate-typing all the basic items.
{{GVI|arma3|1.00}} full support<!-- in 2013 -->


It originally had a text-only interpreter making it quite impossible to generate config.bin's versus config.cpp's. Later, Binarize was modified to create new token code for this syntax. This token code is broken as it bears no relationship to any other tokenised output. It 'works' simply because it's data format can be ignored.


It is not present in any form in any of the official addons accompanying Arma 3.
The <syntaxhighlight lang="cpp" inline>array[] += {}</syntaxhighlight> syntax allows to add items to an existing array inherited from the direct parent.
<!-- //commented until somebody looks into this article
As a command it is almost totally useless. Since nested hierarchy isn't permitted, it's pointless.
-->


{{Feature|important|
* This syntax has limitations in inheritance - see {{Link|#Limitations}}.
* This syntax should '''not''' be used in [[Description.ext]] - only in modded {{Link|Config.cpp/bin File Format|config.cpp}}.
}}


usage:


class A
== Usage ==
{
  array[]={any,thing};
};
class B:A
{
  array+={more,Bstuff];
}
class C:A
{
  array+={other, Cstuff};
};


ONLY direct inheritance works of an array explicitly stated in the inherited class as being array[]={some,thing}. The following WILL NOT WORK
<syntaxhighlight lang="cpp">
class A
{
array[] = { any, thing };
};


class B : A
{
array += { more, Bstuff };
};


class A {array[]={any,thing};}
class C : A // inherits from A, -not- B
class B:A{};
{
class C:B
array += { other, Cstuff };
{
};
  array[]+={wont,work}; // result: array[]={wont,work};
</syntaxhighlight>
}
-----
class A {array[]={any,thing};}
class B:A{array[]+={more,stuff};};
class C:B
{
  array[]+={wont,work}; // result: array[]={wont,work};
}


[[Category:BIS_File_Formats]]
 
[[Category:ArmA: File Formats]]
== Limitations ==
 
Only '''direct inheritance''' of an explicitly-stated array works. The following cases do '''not''' work:
{| style="awidth: 100%"
| style="width: 50%" |
<syntaxhighlight lang="cpp">
class A { array[] = { any, thing }; };
class B : A {};
class C : B // inherits from B which inherits from A (without changes)
{
array[] += { wont, work }; // result: array[] = { wont, work };
};
</syntaxhighlight>
|
<syntaxhighlight lang="cpp">
class A { array[] = { any, thing }; };
class B : A { array[] += { more, stuff }; };
class C : B // inherits from B which inherits from A (with += changes)
{
array[] += { wont, work }; // result: array[] = { wont, work };
};
</syntaxhighlight>
|}
 
 
[[Category:BIS File Formats]]
[[Category:Introduced with Arma 3 version 0.50]]
[[Category:Introduced with Arma 3 version 1.00]]

Latest revision as of 14:41, 13 June 2023

Arma 3 logo black.png0.50 same-file support
Arma 3 logo black.png1.00 full support


The array[] += {} syntax allows to add items to an existing array inherited from the direct parent.

⚠


Usage

class A
{
	array[] = { any, thing };
};

class B : A
{
	array += { more, Bstuff };
};

class C : A // inherits from A, -not- B
{
	array += { other, Cstuff };
};


Limitations

Only direct inheritance of an explicitly-stated array works. The following cases do not work: 

class A { array[] = { any, thing }; };
class B : A {};
class C : B // inherits from B which inherits from A (without changes)
{
	array[] += { wont, work }; // result: array[] = { wont, work };
};

class A { array[] = { any, thing }; };
class B : A { array[] += { more, stuff }; };
class C : B // inherits from B which inherits from A (with += changes)
{
	array[] += { wont, work }; // result: array[] = { wont, work };
};
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