Michael Jones writes:
[..]
# DO NOT DELETE: Beginning of Haskell dependencies
Main.o : Main.hs
Main.o : ./ClassOne.hi
ClassOne.o : ClassOne.hs
ClassTwo.o : ClassTwo.hs
ClassThree.o : ClassThree.hs
# DO NOT DELETE: End of Haskell dependencies
It's worth pointing out that this part is
For strange reasons I won't get into here, I would like to implement an
instance of the Functor class for various function types with 1 or more
arguments. I want fmap to transform the result of the function, as
opposed to transforming the first argument.
Once I figured out the syntax, the
People,
I want to comment my last letter on the need of profiling.
The matter is that it helps to find errors in theoretical
estimations, to find the estimation "bugs".
Analyzing a complex program, the designer may assign the cost
estimations to its parts. For example,
How do I use sockets in Haskell? The ghc manual had some information in the users
guide (6.7 Interfaces to C libraries) but the sentence which started tantalisingly
"Various examples of networking Haskell code are provided in "
had no second half.
I'd prefer to use hugs during development
Hello,
is it possible to have class instances local to a module or a function?
This would be very useful since it occurs quite often that certain
instances are appropriate for most modules but one.
Michael
You can't hide instances. It's sometimes nice to, but it
leads to complications that there seemed to be no
clean way to resolve. So the design is clean, but lacks a
desirable feature.
Simon
| -Original Message-
| From: Michael Marte [mailto:[EMAIL PROTECTED]]
| Sent: 23 June 2000
Chris Okasaki wrote:
I've taken a look at these. I'll limit myself to just one comment:
1.1.1. Constructor names
Empty values of type X have the name emptyX, e.g. emptySet.
You've struck a pet peeve of mine. These suffixes are doing namespace
management, avoiding name clashes
Frank Atanassow wrote:
To be fair, I can give 4 arguments against it.
1) Hugs's error messages don't qualify names, so they become very difficult
to read when you use this convention.
That's a totally bogus reason. Tell the implementors to fix Hugs.
2) The Prelude doesn't use
"chris" == Chris Okasaki [EMAIL PROTECTED] writes:
chris You've struck a pet peeve of mine. These suffixes are doing namespace
chris management, avoiding name clashes between different things that you
chris want to call empty. But Haskell already has a perfectly good language
chris mechanism
Lennart Augustsson wrote:
Frank Atanassow wrote:
2) The Prelude doesn't use it.
Well, it doesn't for historical reasons.
Am I alone in thinking that the prelude is desperately in
need of restructuring? Has anyone got any proposals for
nested modules (so we could have
| 1) Hugs's error messages don't qualify names, so they become
| very difficult to read when you use this convention.
| ...
| ... #1 is the least important in theory, since it's fixable and
| implementation-dependent, but turned out for me to be the most
| important in practice; Hugs'
Fri, 23 Jun 2000 09:05:54 -0400 (EDT), Chris Okasaki [EMAIL PROTECTED] pisze:
These suffixes are doing namespace management, avoiding name clashes
between different things that you want to call empty. But Haskell
already has a perfectly good language mechanism for doing this --
the module
On Fri, 23 Jun 2000, Mark P Jones wrote:
[snip]
Hugs is also quite old; it's core goes back nearly ten years!
With a more "modern" interface, we might solve the interface
dilemma by arranging for fully qualified names, types, etc. to
pop up in a "tooltip" when the user mouses over an
23 Jun 2000 16:57:48 GMT, Marcin 'Qrczak' Kowalczyk [EMAIL PROTECTED] pisze:
* [...]
* Overloading by the monad (like MArray) allows adding instances for
derived monads, without explicit lifting on each use.
--
__(" Marcin Kowalczyk * [EMAIL PROTECTED] http://qrczak.ids.net.pl/
\__/
These suffixes are doing namespace management, avoiding name clashes
between different things that you want to call empty. But Haskell
already has a perfectly good language mechanism for doing this --
the module system! Why is emptyX preferable to X.empty? The latter
convention is
Fri, 23 Jun 2000 14:11:04 -0400 (EDT), Chris Okasaki [EMAIL PROTECTED] pisze:
Suppose you have two *classes* that both need/want the same name.
For example, you may have a class of sequences and a class of finite
maps that both want to use an empty method. Do you call one emptyS
and the
On Fri, Jun 23, 2000 at 11:51:56AM +, Steinitz, Dominic J wrote:
How do I use sockets in Haskell? The ghc manual had some information
in the users guide (6.7 Interfaces to C libraries) but the sentence
which started tantalisingly
"Various examples of networking Haskell code are
I have to call Java compiled bytecodes from a Haskell program. So,
I am looking for some kind of tool or library that implements this kind of
functionality. The tool should implements this behavior in the same way
as GHC allows calls to foreign C code.
Hi Herman,
This is what Lambada
I *knew* people couldn't resist talking about names! :-) OK, I've
invited you to do this, but more than a dozen mails solely about the
first item of section 1.1.1 were a little bit surprising...
To be more serious: Perhaps I wasn't clear enough about the purpose of
these conventions. What
On Fri, 23 Jun 2000, Chris Okasaki wrote:
(...)
Also, I've noticed a tendency to shorten the suffixes as much as
possible (eg, emptyS or emptyFM), in which case you again quickly
run into name clashes.
(...)
I agree, that is undesirable. Such names get cryptic and are usually
overlooked when
For strange reasons I won't get into here, I would like to implement an
instance of the Functor class for various function types with 1 or more
arguments. I want fmap to transform the result of the function, as
opposed to transforming the first argument.
Once I figured out the syntax, the
I have to call Java compiled bytecodes from a Haskell program. So,
I am looking for some kind of tool or library that implements this kind of
functionality. The tool should implements this behavior in the same way
as GHC allows calls to foreign C code.
This is what Lambada is all
22 matches
Mail list logo
