Can someone tell me if there are any primitives, that used to detect
machine type overflows, in ghc haskell ? I perfectly understand, that I
can build something based on preconditioning of variables, but this will
kill any performance, if needed.
___
On 7/27/12 1:49 PM, Ross Paterson wrote:
So a language is referentially transparent if replacing a sub-term with
another with the same denotation doesn't change the overall meaning?
But then isn't any language RT with a sufficiently cunning denotational
semantics? Or even a dumb one that gives e
On 7/24/12 9:19 PM, Christian Sternagel wrote:
(x == y) = True ==> x = y
(x == y) = False ==> not (x = y)
(x == _|_) = _|_
(_|_ == y) = _|_
Those axioms state that (==) is sound w.r.t. to meta-equality and strict
in both it's arguments.
An immediate problem that arises here is: what exactly do
On 7/24/12 9:19 PM, Christian Sternagel wrote:
Dear all,
Thanks for your replies. Just to clarify: I am fully aware that inside
Haskell there is no guarantee that certain (intended) requirements on
type class instances are satisfied. I was asking whether the intention
for Eq is that (==) is comm
On 27 July 2012 14:52, Marco Túlio Gontijo e Silva
wrote:
> thread blocked indefinitely in an MVar operation
IIRC, that means that a thread is blocked on an MVar and the MVar is
only reachable by that thread. You said you tried adding NOINLINE,
which is usually required for unsafePerformIO. Did
On 29/07/2012, at 6:21 PM, C K Kashyap wrote:
> I am struggling with an idea though - How can I capture the parent element of
> each element as I parse? Is it possible or would I have to do a second pass
> to do the fixup?
Why do you *want* the parent element of each element?
One of the insanel
Hi Joey.
Thanks for your answer.
On Sun, Jul 29, 2012 at 3:16 PM, Joey Adams wrote:
> On Fri, Jul 27, 2012 at 9:52 AM, Marco Túlio Gontijo e Silva
> wrote:
>> I thought that the only thing I needed to take care while using
>> unsafePerformIO was knowing that the time of execution is undetermine
GHC does not provide any form of real-time guarantees (and support for
them is not planned).
That said, it's not as bad as it sounds:
- Collecting the first (young) generation is fast and you can control
the size of that first generation via runtime system (RTS) options.
- The older generation
On Fri, Jul 27, 2012 at 9:52 AM, Marco Túlio Gontijo e Silva
wrote:
> I thought that the only thing I needed to take care while using
> unsafePerformIO was knowing that the time of execution is undetermined
> and that it could even run more than once. This is not a problem for
> my logging. Is t
I'm working on an application that involves processing a lot of Unicode
data, and I'm finding the built-in Show implementation for Char to be
really inconvenient. Specifically, it renders all characters at U+0080 and
above with decimal escapes:
Prelude> '\x80'
'\128'
This is annoying bec
On Sun, Jul 29, 2012 at 1:21 AM, C K Kashyap wrote:
> Hi,
>
> With the help of the cafe I've been able to write up the xml parser using
> parsec -
> https://github.com/ckkashyap/really-simple-xml-parser/blob/master/RSXP.hs
>
> I am struggling with an idea though - How can I capture the parent elem
On Sun, Jul 29, 2012 at 12:52 AM, C K Kashyap wrote:
> Hi,
> I was looking at a video that talks about GC pauses. That got me curious
> about the current state of GC in Haskell - say ghc 7.4.1.
> Would it suffer from lengthy pauses when we talk about memory in the range
> of 500M +?
> What would
As for understanding monads, you can try to define the State monad
[1]. Not sure if it's the best example but it's intuitive in that it
let's you thread a state "behind the scenes".
***
Not related to your question -- in your example if you want to
translate characters but do not plan to change t
Dear all,
next Tuesday, 31st of July, at 19h30, Munich's functional programming
enthusiasts will meet at Max-Emanuell-Brauerei. If the weather is fine,
we will sit outside. If you plan to join, please go to:
http://www.haskell-munich.de/dates
and click the button.
Heinrich
{- I am trying to understand and provide a *simplified* explanation of instance contexts and their relationship with class hierarchies. I use the example from [1]. Are the following two sentences and annotated code a reasonable explanation? " When instantiating an instance I of C, its context must
Hi,
I was looking at a video that talks about GC pauses. That got me curious
about the current state of GC in Haskell - say ghc 7.4.1.
Would it suffer from lengthy pauses when we talk about memory in the range
of 500M +?
What would be a good way to keep abreast with the progress on haskell GC?
Rega
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