Kotlin allows you to overload the += for your own classes. You just create a function called plusAssign such that a += b translates to a.plusAssign(b) https:/

Kotlin allows you to overload the += for your own classes. You just create a function called plusAssign such that a += b translates to a.plusAssign(b) https://kotlinlang.org/docs/reference/operator-overloading.html https://kotlinlang.org/docs/reference/operator-overloading.h...