About new Session class

Development Programming & Scripting
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1

The Session class from the latest patch notes:

Added session class, GetSession function, and weak_map map supertype lacking iteration or Length to allow defining session-local globals. For example:
  var GlobalInt:weak_map(session, int) = map{}
  ExampleFunction():void=
      X := if (Y := GlobalInt[GetSession()]) then Y + 1 else 0
      if:
          set GlobalInt[GetSession()] = X
      Print(“{X}”)

Am I correct in thinking this is for round persistence? EX: A variable that tracks the current round, or a players total number of wins that Game as a whole that you couldn’t track otherwise because of lack of persistence between rounds without creating a custom round manager?