Array+=
Bis introduced the array[]+={} syntax for arma3 as an attempt to add unique weapons (or magazines) to a unit without the tedium of duplicate-typing all the basic items.
It originally had a text ONLY interpreter making it quite impossible to generate config.bin's versus config.cpp's. Later, bis binarise 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 arma3.
As a command it is almost totally useless. Since nested hierarchy isn't permitted, it's pointless.
usage:
class A { 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
class A {array[]={any,thing};} class B:A{}; class C:B { array[]+={wont,work}; // result: array[]={wont,work}; }
class A {array[]={any,thing};} class B:A{array[]+={more,stuff};}; class C:B { array[]+={wont,work}; // result: array[]={wont,work}; }