Hi again! Sorry for all the questions lately, I’ve been on a roll!
Example code:
https://play.crystal-lang.org/#/r/64qu/edit
alias ItemTuple = Tuple(Int64, Int32, String, Int16, Int8, Int8, Float64, Float64, Float64, Float64, Int8)
class Item
property i : ItemTuple
property x = 0_f32
property y = 0_f32
def initialize(@x : Float32, @y : Float32, @i : ItemTuple)
end
end
class Game
property loot = Hash(Int64, Item).new
end
class GameServer
property games = Hash(String, Game).new
end
gs = GameServer.new
# fill her up
10.times do |x|
new_name = "game#{x}"
gs.games[new_name] = Game.new
gs.games[new_name].loot[x.to_i64] = Item.new(0.00f32, 0.00f32, {123_i64, 1, "", 12_i16, 0_i8, 0_i8, 0.00, 0.00, 0.00, 0.00, 0_i8})
end
puts gs.games.size
10.times do |x|
gs.games.delete "game#{x}"
# buh bye
end
puts gs.games.size
One might see this code and think hm… it’s working as intended. And that’s probably true. Except, if you take a closer look at what’s going on, you will notice the loot hash derived from the class Game doesn’t get deleted / cleared. However, the game instance itself is deleted.
My question is: What happens to those Item tuples that were created and stored under the instantiated game object (Game)? Does the GC handle them when it finds out there are no references to the tuples anymore? In this case and specific code, there are no other references to the tuple data, so it’s safe to say the GC will take care of it? If not, would I need to add
gs.games["game#{x}"].loot.clear
before
gs.games.delete "game#{x}"
?