Hi Conal,
I don't have any pointers, but here's my attempt to derive the general rule
for derivatives of application of S:
D (S f g) x
= d(S f g t) / dt | t = x
= d(f t (g t)) / dt | t = x
= D1 f t (g t) * dt/dt + D2 f t (g t) * d(g t)/dt | t = x (#)
where D1 and D2 are partial derivative
Hi,
Ashley Yakeley wrote:
| The "layout" rules drive me nuts. You might prefer using parentheses and
| semicolons, as I do:
I guess the point behind the layout rules is that anything violating such
rules is considered bad programming style. I agree that Haskell
compilers/interpreters should gi
| When trying to right IO I continually run across this
| sort of compile error which I just don't understand.
| Any help would be very muich appreciated.
|
| Function:
|
|
| while :: IO Bool -> IO () -> IO ()
|
| while test action = do res <- test
| if res then do action
"S. Alexander Jacobson" wrote:
>
> Does anyone know why the haskell designers did not make the syntax
> right associative? It would clean up a lot of stuff.
>
> Haskell Non-Haskell
> Left AssociativeRight Associative
> foo (bar (baz (x)))
the following is more general:
> instance (Eager a, Eager b) => Eager (a, b) where
> eager xy@(x, y) = eager x `seq` eager y `seq` xy
Ultimately, generic Haskell may come handy.
-- Zhanyong Wan
Dept of Computer Science, Yale University
