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Practice

Polymorphism gauntlet

⭐⭐⭐ advanced~60 min of coding3 challenges

Dispatch, abstract references, and inherited-method dispatch, each with traps.

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What you will practice

  1. Payroll over a mixed list⭐⭐⭐ advanced
  2. Abstract shapes with conditional overrides⭐⭐⭐ advanced
  3. Trace the greeting chain⭐⭐⭐ advanced

Need the concept first? Re-read the lesson.