[racket] structure question

From: Neil Van Dyke (neil at neilvandyke.org)
Date: Wed Dec 8 00:20:13 EST 2010

Manfred Lotz wrote at 12/07/2010 11:51 PM:
> (add-record (make-book :author "John Grisham" :title "The Client"))
> I like to use field names like in the example above. Can I do this in racket?

What I have done most recently is to define a struct with a low-level 
constructor with positional arguments, and then define a constructor 
procedure with keyword arguments ultimately calls the low-level constructor.

There is often a need for a higher-level constructor anyway, such as for 
storing internal information in the struct or performing run-time checks.

But, if you wanted to, you could define a simple macro that defines a 
struct constructor that accepts keyword arguments and simply stores 
arguments to struct fields without checking or any other added behavior.


Posted on the users mailing list.