> Now generalize it to more than two cases, or one where the second case
> needs to pattern match too. The magic of pattern guards is not in a
> single guarding expression, but in a function with many different cases
> which use pattern guards.
MonadPlus is your friend, especially if (fail s) is m
John Meacham <[EMAIL PROTECTED]> writes:
> Oddly enough, I was looking over the old Haskell discussions, and
> pattern guards were supposed to make it into Haskell 98 according to the
> decision. Any idea what happened? did someone just forget to write them
> up or was there further discussion els
Hi
Bright Sun wrote:
> Hi,
>
> Tks, this is not what I wanted.
>
> I want remove pairs list,
>
> [(5,1),(4,1),(3,1),(2,1),(1,1)] remove [(2,1),(1,1)]
> [(5,1),(4,1),(3,1)]
[(5,1),(4,1),(3,1),(2,1),(1,1)] \\ [(2,1),(1,1)]
should give the right result. Befere using the '\\' operator you may
n
On Mon, Mar 28, 2005 at 02:17:46PM +0200, Yitzchak Gale wrote:
> I posted a link to the following on the HaskellTwo
> wiki page. Please comment.
>
> I would like to suggest that PatternGuards NOT be included
> in HaskellTwo.
>
> While I enjoyed Simon Peyton Jones' well-written
> note on pattern g
I posted a link to the following on the HaskellTwo
wiki page. Please comment.
I would like to suggest that PatternGuards NOT be included
in HaskellTwo.
While I enjoyed Simon Peyton Jones' well-written
note on pattern guards
[http://research.microsoft.com/Users/simonpj/Haskell/guards.html]
very much
Thomas Hallgren wrote:
If classes were allowed to declare default
methods for superclasses...
Benjamin Franksen wrote (on Haskell Libraries):
Robert Will has written a fully specified proposal for this. He calls it
"delayed method definition", see
http://www.stud.tu-ilmenau.de/~robertw/dessy/fun/,
