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new-cmd started the lesson entitled "Abstract classes and methods: syntax, examples"

Anonymous #11830276 registered on CodeGym

new-cmd started the lesson entitled "Abstraction in OOP: why and how to use it"

new-cmd advanced to Level 19

Jacek completed the "Złote cegły ✨" task on attempt 1

new-cmd started the lesson entitled "The relationship between polymorphism and abstract classes"

Jacek is making attempt 1 to complete the "Złote cegły ✨" task

new-cmd is making attempt 1 to complete the "Dynamic Office: Extensibility and the Versatility of Polymorphism" task

new-cmd completed the "Team extension: Adding a new employee type" task on attempt 1

new-cmd is making attempt 1 to complete the "Team extension: Adding a new employee type" task

new-cmd completed the "Corporate Symphony: Polymorphism in Employee Work" task on attempt 1

new-cmd is making attempt 1 to complete the "Corporate Symphony: Polymorphism in Employee Work" task