2023-01-27

RED keywords clarifications

Asked on Discord about const:

credits to Technic235

  • final means the function cannot be altered any more
  • const means function and/or argument/parameter cannot EVER be altered and will always be the same, but you can obviously set its initial - value (no const variables)
  • persistent means the values of the variables stay forever, between save games unless manually changed via code. If the variable is - declared inside a class, the class and variable must both be persistent for it work.
  • static means there will only ever be one instance of the function (no static variables)
  • let is always used for declaring variables regardless of other keywords used

credits to psiberx

  Redscript 
public const func GREAT(): String = "something great"

credits to jekky

I think const means two things

functions marked with const can be const-evaluated and they're basically inlined locals and parameters can be marked const and I think this means they're immutable

redscript variables are lexically scoped so I think it's more like let and const in python

  Redscript 
class ActionWeightManagerDelegate extends ScriptBehaviorDelegate
{
    const editable var actionsConditions : array< String >;
    // ...

you can't have const atm. you can use it but it has no effect (maybe other than storing a flag in the bytecode).