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Practice

Generics — Practice

intermediate~18 min of coding3 challenges

Shape-preserving functions: a first-or-default picker, a keyed group-by, and a result-wrapping combinator whose output shape mirrors its input.

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What you will practice

  1. First or Defaultintermediate
  2. Keyed Group-Byintermediate
  3. Result Wrapperintermediate

Need the concept first? Re-read the lesson.