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Data Types · easy

10. Lists

Bounded ordered collections of a single type.

1 min read2 questionsup to 50 XPtopic 10/50

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Lists have a mandatory maximum length defined in their type signature and hold elements of a uniform type.

clarity
(list u1 u2 u3)

How to study this topic

  1. 1. Read the explanation once end to end, skipping the code.
  2. 2. Re-read the code snippets and say out loud what each line does.
  3. 3. Answer the quiz without scrolling back — that is the real check.
  4. 4. Read every explanation, even for the answers you got right.

Scoring

  • · Up to 30 XP from quiz accuracy.
  • · +15 XP for a perfect first attempt.
  • · +5 XP while a 3-day streak is running.
  • · 75% or higher marks the topic complete.

Check your understanding

  1. 1. Can lists in Clarity grow to unbounded lengths?

  2. 2. What function adds an item to a list if within bounds?

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