Prog1 and Progn

Example

(progn (print 'a) (print 'b))

(progn (print 'c) (print 'd)))

A

B

B

> (if (> 3 2)

(prog1 (print 'a) (print 'b))

(prog1 (print 'c) (print 'd)))

A

B

A

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