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Functions · easy

16. Read-Only Functions (define-read-only)

Query state without execution fees.

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Read-only functions allow querying state. They cannot contain mutating expressions like `var-set` or `map-set`.

clarity
(define-read-only (get-counter)
  (var-get counter))

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Check your understanding

  1. 1. Can a define-read-only function modify state variables?

  2. 2. Do read-only queries require broadcasted on-chain transaction fees?

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