[racket] Maybe a silly question: Why racket don't have a constructor?

Take the parens out: 

#lang racket
(class object% (super-new) (displayln "hello world") (field (x 10)) (displayln x))


On Dec 19, 2012, at 10:43 PM, Chen Xiao wrote:

> class: field element is not an optionally renamed identifier-expression pair
>   at: ((x 10))
>   in: (class object% (super-new) (displayln "hello world") (field ((x 10))) (displayln x))
> 
> 2012/12/20 Matthias Felleisen <matthias at ccs.neu.edu>
> (new (class object% (super-new) (displayln "hello world") (field ([x 10])) (displayln x)))
> 

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