Is there a way to target hyperoperators at different axes of a
multi-dimensional array? This is an attractive feature of
various APL-like languages, viz. e.g. in J:
a =. 2 5 $ i. 7 - a simple 2-by-5 array
a
0 1 2 3 4 - like this
5 6 0 1 2
+/"1 a - sum reduc
On Sat, May 07, 2005 at 01>00>08PM -0700, Larry Wall wrote:
> On the other hand, since we've distinguished hyperops on
> infixes from hyperops on unaries, maybe an infix hyperop in
> unary position just does the thing to itself:
>
> @squares = Â*Â @list;
>
> which gives us a sum-of-squares tha
On Wed, 18 May 2005, Matt Fowles wrote:
All~
What does the reduce metaoperator do with an empty list?
Interesting. Mathematically an empty sum is zero and an empty product is
one. Maybe each operator {c,s}hould have an associated method returning
its neutral element for [] to use it on empty list
On Wed, 18 May 2005, Rob Kinyon wrote:
1) undef (which may or may not contain an exception), or
2) some unit/identity value that is a trait of the operator,
depending on whether or not people think (2) is actually a good idea.
I would think that the Principle of Least Surprise points to (1),
I don'
There was a discussion of the principal value of square root on
this list some time back, making the point that for positive
real numbers the positive square root is the value of the
standard function. In the complex plane it is desirable to
define the principal value at every point so as to pr
François" PERRAD <[EMAIL PROTECTED]> wrote:
> I notice that building with Perl 5.6.1 (on Win32 with Perl 5.6.1
> ActiveState-build 635 and MinGW) causes problem.
A different Perl works?
> $ parrot
> Assertion failed: (int)io->image->bufused >= 0, file src/pmc_freeze.c, line
> 478
> abnormal pr
Ron Blaschke <[EMAIL PROTECTED]> wrote:
> Below are the test results of
> Windows XP SP2
> Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.10.3077
> for 80x86
> Activestate Python 2.4.1 Build 245
> Activestate Perl 5.8.6 Build 811
[ all dynclasses - ok linker problem ]
Vladimir Lipsky <[EMAIL PROTECTED]> wrote:
> 1) Why the heck
Easy: it's not in the MANIFEST. Why: patches scattered between inline
and attached and the MANIFEST part missing ... it's easy to overlook.
> -# ifdef _MCS_VER1
> +# ifdef _MCS_VER
Thanks, applied - hope that's really the whole thin
On Wednesday 18 May 2005 17:57, Matt Fowles wrote:
> All~
>
> What does the reduce metaoperator do with an empty list?
Here is the last answer from Ken Iverson, who invented reduce in
the 1950s, and died recently.
file:///usr/share/j504/system/extras/help/dictionary/intro28.htm
Identity Functions
Michele Dondi wrote:
On Wed, 18 May 2005, Rob Kinyon wrote:
1) undef (which may or may not contain an exception), or
2) some unit/identity value that is a trait of the operator,
I think that the unit/identity/neutral value is a trait of the
operator *and* the type of the values which are expected f
Hi,
I wondered if it would be useful/good/nice if the syntax for
specifying role parameters would be the same as the standard
subroutine signature syntax (minus the colon, which
separates the parameters which do account to the long name
of the role from the ones which don't).
E.g.:
rol
On 5/15/05, Juerd <[EMAIL PROTECTED]> wrote:
> A few days ago, when typing ./pugs,... You can guess the rest :)
>
> I suggest
>
> ./method
>
> to mean $?SELF.method, and
>
> ../method
>
> to mean $?SELF.SUPER::method, or however that's normally written.
>
> This syntax doesn't clash w
HaloO Ingo,
you wrote:
I wondered if it would be useful/good/nice if the syntax for
specifying role parameters would be the same as the standard
subroutine signature syntax (minus the colon, which
separates the parameters which do account to the long name
of the role from the ones which don't).
much better! one failing test now... with my inline patch to remove
the skip block around test 6.
On 5/19/05, Leopold Toetsch <[EMAIL PROTECTED]> wrote:
> Vladimir Lipsky <[EMAIL PROTECTED]> wrote:
>
> > 1) Why the heck
>
> Easy: it's not in the MANIFEST. Why: patches scattered between inline
>
Hi,
"TSa (Thomas SandlaÃ)" wrote:
> you wrote:
>> I wondered if it would be useful/good/nice if the syntax for
>> specifying role parameters would be the same as the standard
>> subroutine signature syntax (minus the colon, which
>> separates the parameters which do account to the long name
>> of
On Wed, 18 May 2005, Rob Kinyon wrote:
On 5/18/05, Stuart Cook <[EMAIL PROTECTED]> wrote:
To summarise what I think everyone is saying, []-reducing an empty
list yields either:
1) undef (which may or may not contain an exception), or
2) some unit/identity value that is a trait of the operator,
depe
> "Autrijus" == Autrijus Tang <[EMAIL PROTECTED]> writes:
Autrijus> You may wish to use Parrot_call_sub's "SS" form, where
Autrijus> you pass in a string and get back a string. Something
Autrijus> like this:
Autrijus> my $interp = Parrot_new(undef);
Autrijus> # .
Hi,
three quick questions:
Is it intentional that there's no uniq in the current S29[1] draft?
See [2] for Damian saying that uniq is probably in.
I wondered what uniq's default comparator should be, =:=?
Should it be possible to give an own comparator block, similar as with
grep? E.g.
uniq ;
Ingo Blechschmidt wrote:
Hi,
three quick questions:
Since Aaron is still getting up to speed, I'll take a stab at these.
Is it intentional that there's no uniq in the current S29[1] draft?
See [2] for Damian saying that uniq is probably in.
Just hasn't been entered.
I wondered what uniq's def
On 19 May 2005, Colin Paul Adams wrote:
[snip]
> I'm having a problem with this.
> For Parrot_find_global, I'm specifying global.h as one of the header
> files which must be read to generate definitions from.
> But this is failing, apparently because PMC isn't defined.
>
> So I tried to find wher
Ingo Blechschmidt wrote:
I meant: The colon should still act as the delimiter between the params
which account to the long name of the role and those which don't, but
otherwise the syntax should be the same as the standard subroutine
signature syntax, allowing optional params, etc.
I don't think th
Hi,
Rod Adams wrote:
>>I wondered what uniq's default comparator should be, =:=?
> I'd have gone with ~~
Even better. :)
--Ingo
--
Linux, the choice of a GNU | Row, row, row your bits, gently down the
generation on a dual AMD | stream...
Athlon!|
> "Jeff" == Jeff Horwitz <[EMAIL PROTECTED]> writes:
>> What headers do I need to read for the parrot_find_global call?
Jeff> Parrot_PMC is the public type, and behind the scenes it's
Jeff> defined as PMC *.
Jeff> all you should need to include is embed.h, extend.h and for
jerry gay <[EMAIL PROTECTED]> wrote:
much better! one failing test now...
D:\usr\local\parrot-HEAD\trunk>perl t/harness t/pmc/threads.t
t/pmc/threadsok 3/11# Failed test (t/pmc/threads.t at line
163)
# got: 'start 1
# in thread
# done
# Can't spawn ".\parrot.exe
"D:\usr\local\pa
Jerry Gay <[EMAIL PROTECTED]> wrote:
> here's the patch to unskip test 6:
Thanks, applied.
leo
On 5/19/05, Martin Kuehl <[EMAIL PROTECTED]> wrote:
> I have tried, but I can't make myself like it.
I'm afraid I have to agree.
When I saw it used in code after this discussion (I think it must have
been somewhere in pugs t/ or ext/) my reaction was "yuck".
(for what it's worth)
Carl
> "Jeff" == Jeff Horwitz <[EMAIL PROTECTED]> writes:
Jeff> all you should need to include is embed.h, extend.h and for
Jeff> now, resources.h. i'm actually working on fleshing these
Jeff> files out to be more consistent wrt the public API.
I'm getting real close now.
But I'm hav
On 5/19/05, Edward Cherlin <[EMAIL PROTECTED]> wrote:
> It turns out that the domain and range and the location of the
> cut lines have to be worked out separately for different
> functions. Mathematical practice is not entirely consistent in
> making these decisions, but in programming, there seem
On 5/18/05, Anthony Heading <[EMAIL PROTECTED]> wrote:
> Is there a way to target hyperoperators at different axes of a
> multi-dimensional array? This is an attractive feature of
> various APL-like languages, viz. e.g. in J:
>
> a =. 2 5 $ i. 7 - a simple 2-by-5 array
> a
> 0 1 2 3
> "Colin" == Colin Paul Adams <[EMAIL PROTECTED]> writes:
> "Jeff" == Jeff Horwitz <[EMAIL PROTECTED]> writes:
Colin> Can't make 'UTF-8' charset strings
Colin> Despite what the documentation says:
Colin> encoding
Colin> This specifies the encoding used to encode the cha
Miroslav Silovic wrote:
Uhm, but C++ templates are subject to (compile-time) MMD, once you
specialise them. In other words,
role Something[Int $num] {...}
role Something[String $num] {...}
Hmm, C++ has no free floating templates. They always template a
class/struct or a function. The Perl6 equiva
Hi,
while writing a preliminary p6explain, I wondered if the following
should work:
my $text = "aBc";
$text ~~ s/B/{ "C"|"D" }/;
say $text.values; # aCc aDc
This would be extremely handy for p6explain, as I'm currently parsing a
datafile which looks like...
+
Standard mathematical inf
[EMAIL PROTECTED] wrote:
I don't think that a role has a long and a short name. This is
because they aren't subject to MMD. I think of them more as
beeing expanded like C++ templates even though the actual mechanism
will be much more sophisticated. Actually I think of them as F-bounds
as well ;)
Uh
# New Ticket Created by jerry gay
# Please include the string: [perl #35888]
# in the subject line of all future correspondence about this issue.
# https://rt.perl.org/rt3/Ticket/Display.html?id=35888 >
the attached patch converts internal_exceptions to real_exceptions in
bigint.pmc. also, th
* Ingo Blechschmidt ([EMAIL PROTECTED]) [050519 16:52]:
> Should it be possible to give an own comparator block, similar as with
> grep? E.g.
> uniq ; #
>
> uniq:{ abs $^a == abs $^b } 42, 23, -23, 23, 42
> # 42, 23, 42
'uniq' differs from 'sort' because there is no
Hi,
Mark Overmeer wrote:
> * Ingo Blechschmidt ([EMAIL PROTECTED]) [050519 16:52]:
>> Should it be possible to give an own comparator block, similar as
>> with grep? E.g.
>> uniq ; #
>>
>> uniq:{ abs $^a == abs $^b } 42, 23, -23, 23, 42
>> # 42, 23, 42
>
> 'uniq' d
Leopold Toetsch wrote:
> Ron Blaschke <[EMAIL PROTECTED]> wrote:
>> t\op\spawnw.t 5 1280 65 83.33% 2-6
> exit status?
Quite likely, yes. I'd gladly provide a patch, if someone would
decide The Right Thing To Do. That is, what should
Parrot_Run_OS_Command return? Somethi
On Wed, May 18, 2005 at 03:50:07PM -0400, Dino Morelli wrote:
> I moved the \N test out of t/p6rules/cclass.t and made a new file for
> escape tests: escape.t, currently containing tests for \s \S \w \W \d \D
> \n \N
>
> Patch file for MANIFEST and cclass.t, and new file escape.t attached.
I've b
quoting Damian's original mail[1]:
> uniq - remove duplicates without reordering
^^
Would not that mean the original order of the first ocurrence is
preserved? This is what Ruby Array#uniq does:
[4,1,2,4,2,3,5].uniq => [ 4, 1, 2, 3, 5]
The b
The former implementation can be shortened:
sub uniq {
my %h;
return grep { ! $h{$_}++ } @_;
}
But realize that none of the proposed solutions (which are based on
hashes for computing the return) is amenable to the extension Ingo
called for with comparator blocks.
Adriano.
Juerd wrote:
Parens and square brackets are very different things.
I know. The parens relevant here are the ones for precedence overrides.
And Comma is pretty low, so it almost always needs parens around it to
form lists. In particular it is below = and friends.
The above is more commonly written
Hi,
Adriano Ferreira wrote:
> quoting Damian's original mail[1]:
>> uniq - remove duplicates without reordering
> ^^
>
> Would not that mean the original order of the first ocurrence is
> preserved? This is what Ruby Array#uniq does:
>
> [4,1
All:
I was hoping the following would give me an outright error
sub foo (Int $bar) {
say $bar;
}
foo('hello');
I seem to recall, probably incorrectly, that one of the differences
with int, Int, and no type declaration at all is that one would
happily autoconvert for you, 1 would autoconvert b
Colin Paul Adams wrote:
Parrot_new_string
and I'm passing "UTF-8" as the encoding name.
I get back:
Can't make 'UTF-8' charset strings
^^^
Despite what the documentation says:
encoding
Yeah. I'm sorry to say that: you are just hitting a part of Parrot
labeled "under (re)co
> "LP" == Luke Palmer <[EMAIL PROTECTED]> writes:
LP> On 5/18/05, Anthony Heading <[EMAIL PROTECTED]> wrote:
>> Is there a way to target hyperoperators at different axes of a
>> multi-dimensional array? This is an attractive feature of
>> various APL-like languages, viz. e.g. in J:
Ingo Blechschmidt skribis 2005-05-19 21:07 (+0200):
> I read this as that uniq should behave like Unix's uniq(1), i.e.
> removing only successive duplicates, e.g.:
> uniq [3,3,3,4,3] => [3,4,3] # what I meant
> uniq [3,3,3,4,3] => [3,4] # what you meant
Which leads to lots of |so
Vladimir Lipsky <[EMAIL PROTECTED]> wrote:
>> "D:\usr\local\parrot-HEAD\trunk\t\pmc\threads_4.pasm"' failed with
>> exit code 255
> Parrot_really_destroy needs to be fixed
$verbose++ please, thanks
leo
On 5/19/05, Ingo Blechschmidt <[EMAIL PROTECTED]> wrote:
> I read this as that uniq should behave like Unix's uniq(1), i.e.
> removing only successive duplicates, e.g.:
> uniq [3,3,3,4,3] => [3,4,3] # what I meant
> uniq [3,3,3,4,3] => [3,4] # what you meant
That has been discussed
Hi,
quoting A12:
> infix_postfix_meta_operator:<=> $x += 2;
> postfix_prefix_meta_operator:{'Â'} @array Â++
> prefix_postfix_meta_operator:{'Â'} -Â @magnitudes
> infix_circumfix_meta_operator:{'Â','Â'} @a Â+Â @b
so will the following work?
# Silly example
sub in
Hi,
class Foo {
method bar() { 42 }
method baz() { &bar }
}
my $ref = Foo.baz;
$ref(); # Don't think this will work
# (Error: No invocant specified or somesuch)
$ref(Foo.new); # But will this work?
How do I specify multiple invocants (when dealing wit
"TSa (Thomas Sandlaß)" skribis 2005-05-19 21:06 (+0200):
> >The above is more commonly written as
> >
> >my @b = ([1,2,[3,4]);
> Assuming you meant @b = ([1,2,[3,4]]) what do the parens accomplish
> here?
Thanks for the correction. That is indeed what I meant.
The parens do absolutely nothin
Ingo Blechschmidt skribis 2005-05-19 22:45 (+0200):
> class Foo {
> method bar() { 42 }
> method baz() { &bar }
> }
> my $ref = Foo.baz;
My guess:
Foo.$ref
$object.$ref
Just like in Perl 5.
Juerd
--
http://convolution.nl/maak_juerd_blij.html
http://convolution.nl/make_ju
Ingo Blechschmidt wrote:
Is it intentional that there's no uniq in the current S29[1] draft?
See [2] for Damian saying that uniq is probably in.
It still probably is.
I wondered what uniq's default comparator should be, =:=?
&infix:<~~>
Should it be possible to give an own comparator block, simil
Hi,
Damian Conway wrote:
> BTW, I am *sorely* tempted to suggest the following implementation
> instead:
[...]
> which would produce:
>
> uniq ; #
>
> uniq { lc } ; # 'a'|'A', 'b',
> 'C'|'c', 'd'
>
> uniq { abs $^value } 42, 23, -23,
On Thu, 19 May 2005, Juerd wrote:
Ingo Blechschmidt skribis 2005-05-19 22:45 (+0200):
class Foo {
method bar() { 42 }
method baz() { &bar }
}
my $ref = Foo.baz;
My guess:
Foo.$ref
$object.$ref
Just like in Perl 5.
I think Ingo was trying to explicitly specify the normally-implic
Damian Conway wrote:
BTW, I am *sorely* tempted to suggest the following implementation
instead:
which would produce:
uniq ; #
uniq { lc } ; # 'a'|'A', 'b',
'C'|'c', 'd'
uniq { abs $^value } 42, 23, -23, 23, 42;# 42, 23|-23
But I'd
Hi,
I've been using Test::More and others for a few weeks now and trying to
code and test at the same time and it's great! Thank you everyone for
the modules, docs and articles.
I am working with a bunch of scripts that need to run from cron, so they
redirect STDOUT and STDERR to files. They a
On 19/05/05 04:52 +0800, Autrijus Tang wrote:
> An one-hour hack of mine proved fruitful. This is Perl 5 script,
> calling into Perl 6 functions defined inline:
>
> #!/usr/bin/perl
> use Inline Pugs => '
> sub postfix: { [*] 1..$_ }
> sub sum_factorial { [+] 0..$_! }
> '
On Thu, May 19, 2005 at 02:42:18PM -0800, Vonnahme, Nathan wrote:
> So I guess the problem is, Test::More produces output when I use() it,
> but in some cases I'd like to not use() it, but I don't know whether I
> want it until runtime and by then it's already been use()d...
I suspect you're doing
Ron Blaschke wrote:
> Leopold Toetsch wrote:
>> Ron Blaschke <[EMAIL PROTECTED]> wrote:
>>> t\pmc\bigint.t1 256221 4.55% 22
>> What's up with that one?
> Maybe my fault. The program segfaults at C in
> C. Memory gets allocated by a non-debug version of GMP,
> and deall
> From: Michael G Schwern [mailto:[EMAIL PROTECTED]
> Sent: Thursday, May 19, 2005 3:06 PM
> On Thu, May 19, 2005 at 02:42:18PM -0800, Vonnahme, Nathan wrote:
> > So I guess the problem is, Test::More produces output when I use()
it,
> > but in some cases I'd like to not use() it, but I don't kn
On 5/19/05, Damian Conway <[EMAIL PROTECTED]> wrote:
> Ingo Blechschmidt wrote:
> > I wondered what uniq's default comparator should be, =:=?
>
> &infix:<~~>
Woah there. ~~ is a good comparator and all, but it's not the right
one here. ~~ compares an object and a pattern to see if they match.
On 5/19/05, Ingo Blechschmidt <[EMAIL PROTECTED]> wrote:
> Hi,
>
> quoting A12:
> > infix_postfix_meta_operator:<=> $x += 2;
> > postfix_prefix_meta_operator:{'»'} @array »++
> > prefix_postfix_meta_operator:{'«'} -« @magnitudes
> > infix_circumfix_meta_operator:{'»','«
Edward Cherlin wrote:
Here is the last answer from Ken Iverson, who invented reduce in
the 1950s, and died recently.
file:///usr/share/j504/system/extras/help/dictionary/intro28.htm
[snip]
Thanks for bringing in a little history to the discussion. Those links
are all local to your system; do yo
On 5/19/05, Joshua Gatcomb <[EMAIL PROTECTED]> wrote:
> All:
> I was hoping the following would give me an outright error
>
> sub foo (Int $bar) {
> say $bar;
> }
> foo('hello');
Fortunately you are right.
> I seem to recall, probably incorrectly, that one of the differences
> with int, Int,
Stuart Cook wrote:
In Haskell, there is a distinction between foldl and foldl1 (similar
remarks apply to foldr/foldr1[1]):
The former (foldl) requires you to give an explicit 'left unit'[2],
which is implicitly added to the left of the list being reduced. This
means that folding an empty list will
Edward Cherlin wrote:
There was a discussion of the principal value of square root on
this list some time back, making the point that for positive
[...]
It turns out that the domain and range and the location of the
cut lines have to be worked out separately for different
functions. Mathemat
Luke wrote:
I wondered what uniq's default comparator should be, =:=?
&infix:<~~>
Woah there. ~~ is a good comparator and all, but it's not the right
one here. ~~ compares an object and a pattern to see if they match.
That makes it the right choice for when and grep. But we're trying to
remov
Mark Overmeer wrote:
'uniq' differs from 'sort' because there is no order relationship between
the elements. A quick algorithm for finding the unique elements in perl5
is
sub uniq(@)
{ my %h = map { ($_ => 1) } @elements;
keys %h;
}
...and an even quicker one is:
use Set::Object;
On Thursday 19 May 2005 10:51 pm, Sam Vilain wrote:
> Edward Cherlin wrote:
> > Here is the last answer from Ken Iverson, who invented reduce in
> > the 1950s, and died recently.
> > file:///usr/share/j504/system/extras/help/dictionary/intro28.htm
>
>[snip]
>
> Thanks for bringing in a little h
> "Leopold" == Leopold Toetsch <[EMAIL PROTECTED]> writes:
Leopold> Yeah. I'm sorry to say that: you are just hitting a part
Leopold> of Parrot labeled "under (re)construction" and the docs
Leopold> aren't all up to date.
>> So does that mean I'm limited to singlebyte string
Hi all,
While trying to convert Haskell statements like this to Perl 6:
data Cxt = CxtVoid -- ^ Context that isn't expecting any values
| CxtItem !Type -- ^ Context expecting a value of the specified type
| CxtSlurpy !Type -- ^ Context expecting multiple values of the
Ron Blaschke wrote:
Ron Blaschke wrote:
t\pmc\bigint.t1 256221 4.55% 22
The problem seems to be caused by the C in
F. Well, not the actual cause, but that's
where we fail.
mpz_get_str() returned a string that was very likely allocated by a
different "default allocation
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