Dear list members, While playing around with Racket in DrRacket, I accidently entered in the interactions window. > (define x 7) > (define x 8)
and DrRacket allowed it, i.e. I didn't get a "duplicate definition of identifiers error message. So to try and figure out what was going onI then entered this in the definitions window of DrRacket:: *Code snippet A* (define-namespace-anchor a) (define ns (namespace-anchor->namespace a)) (eval '(begin (define x 7) (define x 8)) ns) (eval 'x ns) and still no "duplicate definitions error". I then tried this: *Code snippet B* (define x 9) (define-namespace-anchor a) (define ns (namespace-anchor->namespace a)) (eval '(begin (define x 7) (define x 8)) ns) (eval 'x ns) and I got the error message: "cannot redefine a constant x".. Can someone explain to me why in code snippet A in the definitions window (and also simply entering (define x 7) (define x 8) in the interactions window) doesn't give me a duplicate definitions error. Many thanks, Harry Spier
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