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Foundations · easy

2. LISP Syntax

Parentheses and prefix notation.

1 min read3 questionsup to 50 XPtopic 2/50

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Clarity uses LISP-like syntax with prefix notation where operators precede operands.

clarity
;; Adding two numbers
(+ 1 2)

;; Nested expression: (1 + 2) * 3
(* (+ 1 2) 3)

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. What notation does Clarity use?

  2. 2. How are expressions delimited in Clarity?

  3. 3. What is the result of (* 2 5)?

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