Out of curiosity, what ever happened to the proposal a while back to refactor
the Num class etc so that the operations would be grouped according to what
abstract algebra notions they correspond to?
My understanding was that doing this would make haskell numerics much more
sensible. Eg array indexing could be done by any type that is isomorphic to
natural numbers etc.
cheers,
-Carter
- Original Message
From: Lennart Augustsson [EMAIL PROTECTED]
To: Bulat Ziganshin [EMAIL PROTECTED]
Cc: haskell-cafe@haskell.org
Sent: Thursday, July 12, 2007 4:14:31 PM
Subject: Re: Re[2]: [Haskell-cafe] Number overflow
Of course you should be able to specify what types you want. But it would be
nice if the default was correct rather than fast.
On 7/12/07, Bulat Ziganshin
[EMAIL PROTECTED] wrote:
Hello Thomas,
Thursday, July 12, 2007, 3:14:57 AM, you wrote:
The differences between Int and Integer operations are mostly constant
factors.
well, i will be unlucky if in my real-world program Integers would be
used instead of Ints. defaulting provides a great way to solve this
dilemma, so good-for-anyone approach may be: default defaulting to
Integer instead of Int, and use (Num a) instead of Int in all standard
functions such as length. with jhc-like automatic specialization
feature this should provide enough speed
--
Best regards,
Bulatmailto:[EMAIL PROTECTED]
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