On 04/14/2010 02:43 PM, Matthias Felleisen wrote:
I would like to request another form of structure and I am almost willing to
argue that we got #:prefab not quite right.
Proposed option:
#:list
It's basically like #:prefab but:
(define-struct x (a b) #:list)
introduces a constructor that creates a tagged list: (make-x 10 20) = (list 'x
10 20). The selectors check for the 'x tag and extract the values from the a
and b fields as usual. (x-a (make-x 10 20)) = 10. If mutability is specified
you get mcons instead of cons.
Unrelated, but as long as we are asking for feature requests I would
like some smoother upgrade path between structs and classes. The struct
syntax is very nice for creating objects that store data so I like to
use that rather than starting with classes, but once I decide a struct
should be used in an OO model then I have to rewrite a lot of code.
I have no formal proposal yet, but if anyone has ideas about it I would
be interested.
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