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Allegro CL |
6.1 The LOOP Facility 6.1.2 Variable Initialization and Stepping Clauses 6.1.2.1 Iteration Control 6.1.2.1.1 The for-as-arithmetic subclause
6.1.2.1.1.1 Examples of for-as-arithmetic subclause;; Print some numbers. (loop for i from 1 to 3 do (print i)) 1 2 3 NIL ;; Print every third number. (loop for i from 10 downto 1 by 3 do (print i)) 10 7 4 1 NIL ;; Step incrementally from the default starting value. (loop for i below 3 do (print i)) 0 1 2 NIL |