On 10/19/05, Stevan Little <[EMAIL PROTECTED]> wrote:
> Darren,
>
> Your problem reminds me of the "Expression Problem", which is
> something that IIRC Luke's Theory idea was trying to solve.
Indeed, this problem is almost exactly the contravariant half of the
expression problem. Once upon a time
On 10/19/05, Nate Wiger <[EMAIL PROTECTED]> wrote:
> My concern is that we're solving problems that don't really exist in
> real-world Perl usage. Are there really two competing authors of DBI?
> Or, for any product, do two people really try to market "SuperWidget"?
> No, one person just changes to
On 10/19/05, Darren Duncan <[EMAIL PROTECTED]> wrote:
[snip]
> An example of when this situation can arise is if person X implements
> a simplified XML DOM implementation using 2 classes, Document and
> Node, that work together, where one of those classes (Document) can
> create objects of the othe
Darren,
Your problem reminds me of the "Expression Problem", which is
something that IIRC Luke's Theory idea was trying to solve. Here is
the link to a paper Luke referred me to on the subject:
http://scala.epfl.ch/docu/files/IC_TECH_REPORT_200433.pdf
Also, you can Google the phrase "Expre
On Wed, Oct 19, 2005 at 03:02:14PM +0200, TSa wrote:
: HaloO,
:
: Juerd wrote:
: >Luke Palmer skribis 2005-10-18 11:57 (-0600):
: >
: >>It looks nicer if you use the indirect object form:
: >> trans "string": [
: >>=> "0",
: >> ];
: >
: >
: >It'd also look very nice with optional paren
Larry Wall wrote:
This is one of those accomodations to the real world, like everyone
agreeing on a standard URI format. We're really trying to keep
these module names close to what you'd see as the name of, say,
the corresponding .rpm file. These modules have to have names that
work outside of
On Wed, Oct 19, 2005 at 03:11:21PM -0700, Darren Duncan wrote:
: What are some best practices here that can be used by anyone faced by
: a similar problem?
My battery's running low, so I just skimmed your article, but
my impression is that this is something that would be handled by
virtualizing a
On Wed, Oct 19, 2005 at 03:10:13PM -0700, Nate Wiger wrote:
: Larry Wall wrote:
: >Well, we thought about opening it up like that, but we really kinda
: >need to establish what is an official part of the "long name" for
: >uniqueness purposes, and try to avoid too much visual clutter in
: >standard
On Wed, Oct 19, 2005 at 01:48:08PM +0200, TSa wrote:
: HaloO,
:
: Luke Palmer wrote:
: >It looks nicer if you use the indirect object form:
: >
: >trans "string": [
: > => "0",
: >];
:
: Given the right interpretation this just looks like
: a typed label selection in a multi metho
I'm in a long-standing situation with my module development where I
want to design a set of associated classes such that invocations of
submethods or class methods, such as new(), of one class by another
class continue to work as expected when any or all of those classes
is subclassed. I have
Larry Wall wrote:
Well, we thought about opening it up like that, but we really kinda
need to establish what is an official part of the "long name" for
uniqueness purposes, and try to avoid too much visual clutter in
standard usage.
Going with that... I would think that the "official" part is r
Hey all,
I was messing around with GraphViz today and wrote a quick hack to
autogenerate class diagrams using the reflective capabilities of the
metamodel prototype. I put some of the more interesting diagrams
online, you can view them here:
http://perlcabal.org/~stevan/mm_viz/index.html
On Wed, Oct 19, 2005 at 01:30:07PM -0700, Nate Wiger wrote:
: Stevan Little wrote:
: >Nicholas,
: >
: >This is addressed in S11, here is a link:
: >
: > http://search.cpan.org/~ingy/Perl6-Bible/lib/Perl6/Bible/S11.pod
: >
: >To summarize, the syntax to load the modules is:
: >
: > use Dog-1.2.1;
On Wed, 2005-10-19 at 16:07, Aaron Sherman wrote:
> I thus propose 2005-03-16 (last Rod Adams update) - 2005-10-17
> (yesterday, yes that's arbitrary) on the mailing list and pugs/ext from
> svn as of revision 7682 as the inputs for the next revision of S29
s{pugs/ext}{pugs/t/builtins} for the mo
Stevan Little wrote:
Nicholas,
This is addressed in S11, here is a link:
http://search.cpan.org/~ingy/Perl6-Bible/lib/Perl6/Bible/S11.pod
To summarize, the syntax to load the modules is:
use Dog-1.2.1;
While the syntax to create a specific version of a module is:
my Dog-1.3.4-cpan:JRA
Yesterday, the spam filters on p6l didn't like me, but that's all been
fixed. So, on to the good stuff
I've been consumed by work for a while, but every time I return to the
S29 work I have the same problem: p6l is a constantly bubbling cauldron
of ideas, proposals, decisions, reversals, modif
> "RK" == Rob Kinyon <[EMAIL PROTECTED]> writes:
>> > Text-substitution macros would have to be handled in an earlier pass,
>>
>> I still don't see evidence for this. Or maybe I do, but I don't see
>> any reason that the preprocessing pass must finish before the parsing
>> begins.
> > Text-substitution macros would have to be handled in an earlier pass,
>
> I still don't see evidence for this. Or maybe I do, but I don't see
> any reason that the preprocessing pass must finish before the parsing
> begins.
Mixing C and Perl ...
my $foo;
BEGIN { $foo = '}'; }
#define OPEN {
Just an FYI to anyone who is interested.
I have implemented the basic Eigenclass structure into the most
recent meta-model prototype. It basically looks like this:
Class
^
:
eFoo<...eBar
^ ^
| |
Foo<...Bar
This allows for completely inheritabl
On Wed, Oct 19, 2005 at 09:33:39AM -0400, Stevan Little wrote:
: On Oct 19, 2005, at 4:10 AM, Larry Wall wrote:
: >On Tue, Oct 18, 2005 at 07:38:19PM -0400, Stevan Little wrote:
: >: Then this is added as "Dog-0.0.2-cpan:LWALL" into the main symbol
: >: table. Then once the compilation process is c
On Wed, Oct 19, 2005 at 09:33:39AM -0400, Stevan Little wrote:
> However, this brings up an issue I was thinking about. Take this code
> for instance:
>
> use Cat-0.0.1;
> use PetStore;
>
> my Cat $kitty .= new();
>
> --- in PetStore.pm ---
>
> use Dog;
> use Cat-0.0.5;
>
> Which C
On Wed, Oct 19, 2005 at 12:59:34PM +0200, Ruud H.G. van Tol wrote:
: Larry Wall:
:
: > I think using two different versions from the same
: > module is going to be relatively rare.
:
: For dealing with two generations at the same time, like with
: conversions: in stead of designing and applying a
Larry,
On Oct 19, 2005, at 4:10 AM, Larry Wall wrote:
On Tue, Oct 18, 2005 at 07:38:19PM -0400, Stevan Little wrote:
: Then this is added as "Dog-0.0.2-cpan:LWALL" into the main symbol
: table. Then once the compilation process is complete, I traverse the
: symbol table hierarchy collecting all
HaloO,
Juerd wrote:
Luke Palmer skribis 2005-10-18 11:57 (-0600):
It looks nicer if you use the indirect object form:
trans "string": [
=> "0",
];
It'd also look very nice with optional parens:
"string".trans [ => "0" ];
Or is it not yet time to resuggest that? :)
I l
On Wed, Oct 19, 2005 at 04:03:54AM -0700, Larry Wall wrote:
> : This one is new to me. I'm not sure I understand what it's used for. Is
> : there already some documentation about it?
>
> It's in my copy of S06, which I haven't checked in yet.
Is there an AES commit feed available somewhere?
--
HaloO,
Luke Palmer wrote:
It looks nicer if you use the indirect object form:
trans "string": [
=> "0",
];
Given the right interpretation this just looks like
a typed label selection in a multi method.
multi trans
{
Str $x: ...; return;
Int $x: ...; return;
Larry Wall skribis 2005-10-19 4:03 (-0700):
> The absence of a dot creates a private attribute. We decided it should
> be even easier to declare a private attribute than a public one, so it's
> just
> has $foo;
> and then it is visible only in the lexical scope.
This takes away my objections
Larry Wall:
> I think using two different versions from the same
> module is going to be relatively rare.
For dealing with two generations at the same time, like with
conversions: in stead of designing and applying a patch (SQL's ALTER
COLUMN, etc.), create a new dataset and let the old informati
On Wed, Oct 19, 2005 at 12:33:11PM +0200, Juerd wrote:
: > : make $:foo equivalent to :foo($foo) (conjectural)
:
: This one is new to me. I'm not sure I understand what it's used for. Is
: there already some documentation about it?
It's in my copy of S06, which I haven't checked in yet
Larry Wall skribis 2005-10-19 1:43 (-0700):
> On Tue, Oct 18, 2005 at 04:43:57PM +0200, Juerd wrote:
> : dot sigils are not actually special. They are required on has-variables
> : and forbidden on all other. Changing them to be optional is trivial, or
> : so I hope.
> Dot sigils drive accessor ge
On Tue, Oct 18, 2005 at 04:43:57PM +0200, Juerd wrote:
: dot sigils are not actually special. They are required on has-variables
: and forbidden on all other. Changing them to be optional is trivial, or
: so I hope.
Dot sigils drive accessor generation, which essentially hoists an
ordinary variabl
On Tue, Oct 18, 2005 at 07:38:19PM -0400, Stevan Little wrote:
: Then this is added as "Dog-0.0.2-cpan:LWALL" into the main symbol
: table. Then once the compilation process is complete, I traverse the
: symbol table hierarchy collecting all the names. Any duplicate short
: names (Dog) are no
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