Dear Sandro,
* sch...@uni-potsdam.de [110119 03:09]:
> Is there a reason why is a subclass of ?
This reflects the way scheme sees lists, which are build of pairs:
(equal? (cons 1 (cons 2 (cons 3 (cons 4 (cons 5 '())
(list 1 2 3 4 5))
=> #t
Does this help?
Christian
__
This reflects the way scheme sees lists, which are build of pairs:
Jeha, i know. A list is a pair, but a pair is not a list. Therefore a
list should be a subclass of pair. (Ok, for '() we have ).
And the other point is, that i can not specialized generic procedures
for and . Maybe it is i
2011/1/19 :
> [...]
> Jeha, i know. A list is a pair, but a pair is not a list. Therefore a list
> should be a subclass of pair. (Ok, for '() we have ).
> [...]
Hello,
that is wrong, and you even give the reason why it's wrong yourself: A
list is either a pair or the empty list. Hence the single
Hi,
all pairs are subtypes of the type of lists
Then all pairs are lists? What about (cons 1 2)? I thought a list is a
pair which cdr is a list (or the empty list -- exclude that case for a
moment). Perhaps I have misunderstood you. I am not that firm with
types and i am a little confuse
* sch...@uni-potsdam.de [110119 15:35]:
> Hi,
>
> >all pairs are subtypes of the type of lists
>
> Then all pairs are lists? What about (cons 1 2)? I thought a list is
> a pair which cdr is a list (or the empty list -- exclude that case
> for a moment). Perhaps I have misunderstood you. I am not
2011/1/19 :
> [...]
> Then all pairs are lists? What about (cons 1 2)? I thought a list is a pair
> which cdr is a list (or the empty list -- exclude that case for a moment).
> [...]
Hello Sandro,
you're right, I neglected the case of pairs whose cdr is not a
list. So to be precise, the type hie
Hello,
I'm trying to apply bind to some C struct like:
(bind "typedef struct foo { int x; } foo;")
I got the "invalid typedef syntax" error.
I replaced the typedef form with something like:
(bind "struct foo { int x; };
typedef struct foo foo;")
It works but now I'm getting a C error "inva
From: Vilson Vieira
Subject: [Chicken-users] invalid typedef syntax using bind
Date: Thu, 20 Jan 2011 02:37:26 -0200
> Hello,
>
> I'm trying to apply bind to some C struct like:
>
> (bind "typedef struct foo { int x; } foo;")
>
> I got the "invalid typedef syntax" error.
>
> I replaced the ty
