> "HenrikB" == Henrik Bengtsson <[EMAIL PROTECTED]>
> on Tue, 24 Jul 2007 18:58:04 +0200 writes:
HenrikB> On 7/23/07, Seth Falcon <[EMAIL PROTECTED]> wrote:
>> Bill Dunlap <[EMAIL PROTECTED]> writes:
>> > With environments, if you use a prime number for the size
>> > yo
On 7/23/07, Seth Falcon <[EMAIL PROTECTED]> wrote:
> Bill Dunlap <[EMAIL PROTECTED]> writes:
> > With environments, if you use a prime number for the size
> > you get considerably better results. E.g.,
>
> > Perhaps new.env() should push the requested size up
> > to the next prime by default.
>
>
Bill Dunlap <[EMAIL PROTECTED]> writes:
> With environments, if you use a prime number for the size
> you get considerably better results. E.g.,
> Perhaps new.env() should push the requested size up
> to the next prime by default.
Perhaps. I think we should also investigate other hashing functi
Duncan Temple Lang <[EMAIL PROTECTED]> writes:
> The HashFunc typedef in hashfuncs.h would be more flexible if it
> took an additional argument of type void * to allow for user
> defined data. Alternatively, it might take the hash table
> object itself. The function might want to do some
> updat
Hi Seth.
Glad you did this. As you know, I think we need more specialized
data structures and the ability to be able to introduce them easily
into R computations, both internally and at the R language-level.
A few things that come to mind after a quick initial look.
The HashFunc typedef in hashf
On Sat, 21 Jul 2007, Seth Falcon wrote:
> In Bioconductor, we have many hashtables where the key is an
> Affymetrix probeset ID. These look sort of like "1000_at". It turns
> out that the algorithm used by R's environments is not very good at
> hashing these values. The dict package lets you in
"Gabor Grothendieck" <[EMAIL PROTECTED]> writes:
> Although the proto package is not particularly aimed at hashing note
> that it covers some of the same ground and also is based on a well
> thought out object model (known as object-based programming
> or prototype programming).
Interesting. The
Although the proto package is not particularly aimed at hashing note
that it covers some of the same ground and also is based on a well
thought out object model (known as object-based programming
or prototype programming).
Here is an example where we create two proto objects (which could
be regard
Hi all,
The dict package provides a dictionary (hashtable) data
structure much like R's built-in environment objects, but with the
following differences:
- The Dict class can be subclassed.
- Four different hashing functions are implemented and the user can
specify which to use when crea
