Could not we do a native (std) singleton in crystal ?

[waghanza]

Hi,

While googling to search how could I implement a singleton in crystal, I've found this shard.

However, I have implemented a singleton as following :

class Options
  class_property with_experimental : Bool = false
end

As crystal, is more and more mature (singleton could be native) is this shard still having non-native (not in std) features ?

Regards,