Do you derive Show for MyData?
-Original Message-
From: Mike Jones [mailto:[EMAIL PROTECTED]]
Sent: 09 May 2000 05:58
To: [EMAIL PROTECTED]
Subject: Showing tuples
Hi,
I am having trouble with Show and tuples.
I have a data structure, say:
data MyData = ...
And a
Chris,
Yes, I do derive Show for MyData. I was surprised it did not work.
Mike
-Original Message-
From: Chris Angus [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, May 09, 2000 12:57 AM
To: 'Mike Jones'; [EMAIL PROTECTED]
Subject: RE: Showing tuples
Do you derive Show for MyData
Mike Jones wrote:
Yes, I do derive Show for MyData. I was surprised it did not work.
Deriving works, but GHC currently only contains instance declarations
for tuples up to 5 elements, so you have to write you own boring
instances for larger ones. *yawn*
Cheers,
Sven
--
Sven Panne
May 2000 14:54
To: 'Chris Angus'
Cc: [EMAIL PROTECTED]
Subject: RE: Showing tuples
Chris,
Yes, I do derive Show for MyData. I was surprised it did not work.
Mike
-Original Message-
From: Chris Angus [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, May 09, 2000 12:57 AM
To: 'Mike Jon
Do you derive Show for MyData?
-Original Message-
From: Mike Jones [mailto:[EMAIL PROTECTED]]
Sent: 09 May 2000 05:58
To: [EMAIL PROTECTED]
Subject: Showing tuples
Hi,
I am having trouble with Show and tuples.
I have a data structure, say:
data MyData = ...
And a
Sven,
That explains it. My tuples are of size 20.
Thanks,
Mike
Deriving works, but GHC currently only contains instance declarations
for tuples up to 5 elements, so you have to write you own boring
instances for larger ones. *yawn*
Cheers,
Sven
--
Sven Panne
