»ö« | perl6.org/ | nopaste: paste.lisp.org/new/perl6 | evalbot usage: 'perl6: say 3;' or rakudo:, alpha:, pugs:, std:, or /msg p6eval perl6: ... | irclog: irc.pugscode.org/ | UTF-8 is our friend! Set by lichtkind on 5 March 2010. |
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lichtkind | thanks | 00:18 | |
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cj | can someone recommend a book or document on compiler engineering? | 00:39 | |
m-locks | A. Aho, R. Sethi, J. Ullman: Compilers: Principles, Techniques, and Tools. Addison-Wesley, 1986. | 00:42 | |
cj | thanks, m-locks | ||
m-locks | np | ||
diakopter | cj: PLP3 (Programming Language Pragmatics 3rd edition) | 00:44 | |
cj | m-locks: you prefer the first edition? | ||
diakopter | five stars | ||
cj | thanks, diakopter :) | ||
m-locks | they seem to have lotsa additional materials, PLP CD and stuff | 00:46 | |
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colomon | rakudo: my Int $x = Mu; | 01:11 | |
p6eval | rakudo b348b3: OUTPUT«Type check failed for assignmentcurrent instr.: '&die' pc 16803 (src/builtins/Junction.pir:347)» | ||
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pugssvn | r29950 | colomon++ | [t/spec] Fudge S14-roles/basic.t (some very disturbing errors here). | 01:19 | |
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pugssvn | r29951 | lwall++ | [S32/IO.pod] put back :s, remove :z, :T, :B, :M, :A, :C | 01:42 | |
r29951 | note that these all end up calling methods on IO, not strings | |||
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k23z__ | can I get a rakudo commit bit ? | 01:48 | |
I'm wsdookadr on github | |||
dalek | kudo: 974d9a8 | (Solomon Foster)++ | t/spectest.data: Turn on S14-roles/basic.t. |
01:49 | |
diakopter | k23z__: I think they want an individual to build up a history of submitting good patches before one gets one of those | 01:50 | |
k23z__ | ah ok sorry | ||
can I write some tests for Perl6 ? | |||
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diakopter | yes :) | 01:50 | |
you can have a commitbit to pugscode | 01:51 | ||
k23z__ | what tests could I write and what would I need ? (I have a compiled rakudo right here) | ||
diakopter | if you don't have one already | ||
the tests are stored in pugscode svn | |||
re "what tests could I write", that's a difficult question | 01:52 | ||
it requires a certain familiarity with the language, or a precise reading of the Synopses (the language specification) | 01:53 | ||
really, both | |||
colomon | Though you don't need to read the full spec, by any means -- just find a nice corner of it. | ||
diakopter | and a knowledge of how the test suite is organized, so you can determine that the feature for which you're considering writing tests hasn't already been thoroughly covered. | 01:54 | |
k23z__ | do you have guides for new devs ? | 01:58 | |
so the road is read the synopsis, the perl6 book on github -> write tests ? | 02:00 | ||
diakopter | depends from where you're coming, and where you think you're going. :D (what languages you've used previously; what kinds of software you expect to write) | ||
Perl 5 experience might help; it might not. The changes/additions (from 5->6) are numerous and varied in size (small,large) enough that existing Perl knowledge might hinder, since it might be more difficult to keep the languages distinct in your mind. | 02:02 | ||
that's the case for me, anyway. It seems that those who have a thorough mastery of Perl 5 have a much easier time keeping them straight than someone like me, who isn't a Perl 5 expert. | 02:04 | ||
TimToady | we all already know where Perl 5 ought to be different :) | 02:05 | |
course, there are still parts of Perl 6 that ought to be different (I'm looking at you IO.pod) | 02:07 | ||
diakopter | k23z__: msg TimToady with your desired username & email address for pugscode svn (if you don't already have an account and you want to commit to the spec/testsuite) | 02:08 | |
I seem to have forgotten my commitbit password, otherwise I would add it | 02:09 | ||
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TimToady | do you still have a mail account at veradox? | 02:11 | |
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diakopter | ohhh that's the username | 02:14 | |
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diakopter considers how to design an API for codegen routines that generate codegen routines | 02:26 | ||
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lue | oi! | 02:32 | |
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lue | ...chirp | 02:43 | |
colomon | hey all. | ||
PerlJam | greetings colomon | 02:44 | |
lue | hello o/ | ||
colomon | submethods.t defines two classes in a... closure? in braces. | ||
lives_ok { | |||
class Foo { has $.foo_build; submethod BUILD() { $!foo_build++ } } | |||
class Bar is Foo { has $.bar_build; submethod BUILD() { $!bar_build++ } } | |||
}, "class definitions were parsed/run/compiled"; | |||
when the tests try to use those classes, they're not there. | 02:45 | ||
any clue if they should be? Or are they local to those brackets? | |||
lue | maybe because it's contained in the braces. That's my first guess :) | ||
PerlJam | classes used to be package-scoped and I think they're lexical by default now. | ||
colomon | (If I take the braces away, the next twenty tests run fine...) | ||
PerlJam | (check the spec obviously :) | 02:46 | |
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PerlJam | oh no, they're still package scoped (or should be) | 02:48 | |
S12:109 | |||
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diakopter | std: package bar { class baz { class foo { }; say foo; }; say foo; } | 02:50 | |
p6eval | std 29951: OUTPUT«Undeclared routine: 'foo' used at line 1ok 00:01 105m» | ||
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diakopter | chenfengy didn't like what p6eval had to say | 02:50 | |
lue | how would you tell if a number is odd or even? | ||
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m-locks | even: number % 2 == 0 | 02:51 | |
TimToady | % or !% | ||
colomon | PerlJam: adding our doesn't even help. | ||
diakopter | TimToady: see p6eval above | ||
(I don't know whether that's correct) | 02:52 | ||
lue | rakudo: say 15 % 2 == 0 | ||
p6eval | rakudo 974d9a: OUTPUT«0» | ||
colomon | rakudo: { class Foo { method bar() { say "bar"; }; }; }; my $a = Foo.new; $a.bar | ||
PerlJam | lue: you monkey patch .odd and .even methods :) | ||
p6eval | rakudo 974d9a: OUTPUT«Could not find non-existent sub &Foocurrent instr.: '_block14' pc 29 (EVAL_1:0)» | ||
TimToady | rakudo: say 15 !% 2 | ||
p6eval | rakudo 974d9a: OUTPUT«Confused at line 11, near "say 15 !% "current instr.: 'perl6;HLL;Grammar;panic' pc 500 (ext/nqp-rx/src/stage0/HLL-s0.pir:328)» | ||
lue | those are supposed to exist!? | ||
TimToady | alpha: say 15 !% 2 | 02:53 | |
p6eval | alpha 30e0ed: OUTPUT«0» | ||
diakopter | alpha: say 15 % 2 ?? "odd" !! "even" | 02:54 | |
TimToady | class foo is visible only inside baz | ||
p6eval | alpha 30e0ed: OUTPUT«odd» | ||
diakopter | oh | ||
PerlJam | Hmm. .odd is actually mentioned in S04:332 | ||
lue | alpha: say 15.odd | ||
TimToady | std: package bar { class baz { class foo { }; say foo; }; say baz::foo; } | ||
p6eval | alpha 30e0ed: OUTPUT«Method 'odd' not found for invocant of class 'Int'in Main (file src/gen_setting.pm, line 324)» | ||
std 29951: OUTPUT«ok 00:01 105m» | |||
PerlJam | I guess I'm not the only one who channels his inner ruby programmer occasionally. | ||
TimToady | std: package bar { class baz { class foo { }; say foo; }; say bar::baz::foo; } | ||
p6eval | std 29951: OUTPUT«ok 00:01 105m» | 02:55 | |
diakopter | std: package bar { { class foo { }; say foo; }; say foo; } | ||
p6eval | std 29951: OUTPUT«ok 00:02 105m» | ||
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TimToady | it's quite ironic that when an Olympic skier falls on the course, it's called DNF | 03:04 | |
m-locks | haha | ||
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new_perl6_hacker | How does rakudo diffrentiate between a $string = "some string" and $code = "Code inside a string" | 03:05 | |
m-locks | well gotta sleep, gn y'all | ||
colomon | o/ | 03:06 | |
new_perl6_hacker | @m-locks its morning here | ||
k23z__ | !tell garu test | ||
m-locks | it's 5am, about my bedtime ;P | ||
new_perl6_hacker | Good night | ||
TimToady | I have to get up at 5am to see if I'm in a panel discussion... | ||
Tene | new_perl6_hacker: rakudo does not differentiate at all. Strings are strings, and there's no type for "a string that happens to incidentally look like Perl 6 code". | 03:07 | |
m-locks | yoink -> | ||
colomon | new_perl6_hacker: but if you have { } inside a double-quote string, it is executed and the result inserted into the string. | ||
PerlJam | new_perl6_hacker: what makes you think rakudo does differentiate those things? | ||
colomon++ ah, good point | 03:08 | ||
lue | I was going to program a little something featured in today's XKCD comic (xkcd.com/710/), but I think programming .odd and .even first'd be more fun | ||
(and in P6 this time) | |||
new_perl6_hacker | @PerlJam how will then find what methods I can invoke on strings and what methods I can invoke code objects | ||
Tene | lue: make sure you generate graphviz output so you can graph your results. :) | 03:09 | |
new_perl6_hacker: the same way you discover what methods you can invoke on any type. | |||
PerlJam | rakudo: "string".^methods.sy | ||
er ... | |||
rakudo: "string".^methods.say | |||
p6eval | rakudo 974d9a: ( no output ) | 03:10 | |
rakudo 974d9a: OUTPUT«maximum recursion depth exceededcurrent instr.: 'perl6;Seq;!fill' pc 13790 (src/builtins/Multi.pir:22)» | |||
Tene | rakudo: {say "hi"}.^methods.perl.say | ||
p6eval | rakudo 974d9a: OUTPUT«maximum recursion depth exceededcurrent instr.: 'perl6;Seq;!fill' pc 13790 (src/builtins/Multi.pir:22)» | ||
Tene | ah, looks like that's broken ATM | ||
alpha: {say "hi"}.^methods.perl.say | |||
p6eval | alpha 30e0ed: OUTPUT«[{ ... }, { ... }]» | ||
PerlJam | heh | ||
Tene | anyway, it's in the class. | ||
lue | graphviz...? | ||
PerlJam | alpha: "String".^methods.say | ||
p6eval | alpha 30e0ed: | ||
..OUTPUT«sprintfScalarComplexStrpredsuccencodeperlACCEPTSWHICHatanminacosmaxbytesevalchopsinrindextanhIntvaluesasinhacosechabsendceilingp5chompkeyskvfloorasechordcapitalizepickroundevalfileintsplitmatchacoshwordsp5choplcjoinsinhcotanacotanatan2reducesrandtrimasecreversecotanhisapolar:d:eucf… | |||
PerlJam | alpha: "String".^methods.join(" ").say | 03:11 | |
p6eval | alpha 30e0ed: OUTPUT«encode succ WHICH ACCEPTS perl sprintf Scalar Complex Str pred map :d cis :e :f log sech log10 min rand max :l truncate bytes sort sin sqrt asin Int cosh :s grep asinh acosech abs end uc ceiling p5chomp samecase floor substr asech ord round flip does int split match acosh | ||
..acosec wo… | |||
Tene | lue: graphviz.org/ | ||
lue: a simple text format for describing and rendering graphs. | |||
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new_perl6_hacker | And I will be able to execute that as &"string" or $string = "some code" ; &$string | 03:12 | |
TimToady | not like that | 03:13 | |
Tene | lue: upload.wikimedia.org/wikipedia/comm...0-no27.svg looks like it was generated with graphviz. | ||
new_perl6_hacker: if you have code in a string that you want to execute, you'll need to use the 'eval' function, which invokes the compiler on the text. | |||
TimToady | you have to work harder to do symbolic lookups in Perl 6 | ||
but then there's no strict refs anymore | 03:14 | ||
new_perl6_hacker | Then all strings must ideally have 'eval' invokable on them | 03:15 | |
TimToady | eval is never ideal :) | ||
lue | Tene: aah. I thought you were talking about P6 testing results :) | ||
Tene | new_perl6_hacker: That's completely true, in exactly the same way as "all files can have the perl6 compiler run on them" | 03:16 | |
new_perl6_hacker | @tene , @TimToady thanks, got it now | 03:17 | |
lue .oO(bah. I wish I could upload whatever to wordpress.com . That'd make my life easier...) | |||
Tene | new_perl6_hacker: No problem. Was there a specific task you were trying to perform or problem you were trying to solve, or just general curiosity? | 03:18 | |
new_perl6_hacker | I was looking at metaprogramming aspects | ||
reflection basically | 03:19 | ||
PerlJam | alpha: my @a = "a".."z"; @a."join"(" ")."say" # :) | ||
p6eval | alpha 30e0ed: OUTPUT«a b c d e f g h i j k l m n o p q r s t u v w x y z» | ||
new_perl6_hacker | But the example quoted by PerlJam earlier didn't show a 'eval' method, is that in the base class of string | 03:20 | |
Tene | You keep talking about classes. It's a function, not a method. | 03:21 | |
PerlJam | new_perl6_hacker: What other languages are you familiar with? | ||
new_perl6_hacker | Ruby and Python | ||
colomon | Tene: I think we added an eval method a while back, too. | 03:22 | |
PerlJam | I was getting a strong ruby vibe from you :) | ||
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PerlJam | (either that or smalltalk or something, but those are rared) | 03:22 | |
er, rarer | |||
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new_perl6_hacker | I think I'm getting confused, because I'm thinking everything from OOperspective . | 03:23 | |
colomon | rakudo: "say 'hello'".eval | ||
p6eval | rakudo 974d9a: OUTPUT«hello» | ||
PerlJam | alpha: "blah".^methods.map(*.name).sort.join(" ").say | 03:24 | |
p6eval | alpha 30e0ed: OUTPUT« :d :e :f :l :s ACCEPTS Array BUILD BUILDALL CREATE Capture Complex Hash Int Iterator PARROT REJECTS Scalar Scalar Str Str WALK WHENCE WHERE WHICH WHICH abs acos acosec acosech acosh acotan acotanh asec asech asin asinh atan atan2 atanh bless bytes can capitalize ceiling chars | ||
..cho… | |||
PerlJam | alpha: "blah".^methods.map(*.name).grep({ $_ ~~ /^e/ }).join(" ").say | ||
p6eval | alpha 30e0ed: OUTPUT«encode eval elems evalfile exp end eigenstates» | ||
PerlJam | there you go | 03:25 | |
Tene | alpha: say "foo".^can('eval') | 03:26 | |
p6eval | alpha 30e0ed: OUTPUT«eval» | ||
Tene | alpha: say "foo".^can('eval').WHAT | ||
p6eval | alpha 30e0ed: OUTPUT«» | ||
PerlJam | hmm | 03:28 | |
why did WHICH appear in the list twice? | |||
and Scalar and Str | |||
lue | there's a WHENCE option? (001 ! | 03:30 | |
rakudo: say 4.WHENCE | |||
p6eval | rakudo 974d9a: OUTPUT«» | ||
PerlJam | lue: WHENCE autovivifies an object | 03:31 | |
it's a closure from whence the object cometh | |||
lue | 'tis a closure whencefrom thy object cometh. (Old English translation free of charge :D ) | 03:34 | |
new_perl6_hacker | :) just got a feeling that all programs(The mail program) go into a eval function inside the compiler. | 03:36 | |
*The main program* | 03:37 | ||
Tene | That's right. | ||
The compiler reads the program text into a string, invokes the compiler on it to get back a Code object, and then invokes that Code object. | |||
new_perl6_hacker | This is great, so we basically have a compiler which we can use any where inside our program. This is a killer feature :) | 03:38 | |
lue | Our main goal is having the P6 interpreter run itself (be written in P6 code). | 03:40 | |
The key, IMO, is recursive definition :) | |||
TimToady | well, it was a killer feature in Perl 3 or so | ||
colomon | and in Lisp, Ruby, etc. | 03:41 | |
still, it's an awesome feature. | |||
TimToady | but usually it's an escape valve indicating a missing feature elsewhere | ||
we treat BEGIN the same say | 03:43 | ||
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PerlJam | Why do we think all languages must be self-describable? | 03:44 | |
TimToady | and eval, in general, opens you up to all sorts of security problems, just like SQL injection | ||
xkcd.com/327/ | 03:46 | ||
lue | TimToady: love that one :) | 03:48 | |
TimToady | PerlJam: we don't, just the good ones. | 03:49 | |
I blame Gödel... | |||
PerlJam | and Escher and Bach ;) | ||
lue | Don't forget Thought. That guy takes forever to figure things out. :) | 03:50 | |
.xkcd(fun with chess: xkcd.com/249/) | 03:52 | ||
rakudo: say chr(0xFDD0) | 03:54 | ||
p6eval | rakudo 974d9a: OUTPUT«» | ||
lue | .u � | ||
phenny | U+FFFD REPLACEMENT CHARACTER (�) | ||
PerlJam | you could do a good meta comic on photoshopping the chess board in that one | ||
TimToady | don't photoshop the chess board, just photoshop me into xkcd :) | 03:55 | |
lue | WIN! (quick, somebody get Larry's head off of Yahoo Images!!!) | 03:57 | |
colomon | Woah, I knew the Gathering was in process, but I didn't know someone had already taken Larry's head! | 03:58 | |
lue | xkcd.com/365/ yet another conference the poor guy can't go to :) | ||
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lue | I think XKCD ought to do a comic about Perl for once (with guest appearance by TimToady of course :) ) | 04:01 | |
colomon | what do you mean "for once"? There are at least two classic comics about Perl. | ||
I have the t-shirt for one... | 04:02 | ||
PerlJam | colomon: yeah, but one of them is called "lisp" | ||
lue | I honestly cannot remember if there werl Perl comics on XKCD :) | ||
s/werl/were/ | |||
colomon | xkcd.com/224/ | 04:03 | |
xkcd.com/208/ | |||
new_perl6_hacker | If an exception happen inside an eval, should the main program see it? | 04:04 | |
TimToady | no, it's trapped in $! | ||
lue | according to number 224, Larry has tight (if possibly indirect) connections with God (all hail!) | 04:06 | |
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lue | .xkcd(xkcd.com/18/ we need more of these jokes) | 04:07 | |
lue will paste a bunch of xkcd comic links to pastebin instead of flooding the channel | 04:09 | ||
lisppaste3 | lue pasted "XKCD comic links" at paste.lisp.org/display/95996 | 04:21 | |
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lue | heelooo-oooh | 04:42 | |
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lue | saluton? Hello? Bonjour? anyone? | 04:56 | |
TimToady is hiding behind a cricket | 04:59 | ||
lue | ah, that's where you are. | 05:01 | |
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new_perl6_hacker | What is the maximum value of anything Inf can hold? | 05:12 | |
diakopter | -Inf | ||
TimToady | how much memory do you have? | 05:13 | |
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new_perl6_hacker | :) | 05:13 | |
lue | rakudo: say 0..3; say [0,3]; say [0,4) | ||
diakopter sprixels along | |||
p6eval | rakudo 974d9a: OUTPUT«Confused at line 11, near "say [0,4)"current instr.: 'perl6;HLL;Grammar;panic' pc 500 (ext/nqp-rx/src/stage0/HLL-s0.pir:328)» | ||
lue | .oO(interval notation would be interesting for the "official P6 module" (as well as set-builder, possibly)) |
05:14 | |
TimToady | no need | ||
0..^4 is already there | |||
and doesn't use up two (count 'em *two*) brackets | 05:15 | ||
lue | ah well, that's why I didn't say "...interesting project for implementation in Rakudo" :) | ||
TimToady | mathematicians do many unforgiveable things as far as computers are concerned, and that's one of 'em | 05:16 | |
lue | rakudo: say 0..Inf | ||
p6eval | rakudo 974d9a: ( no output ) | ||
lue | rakudo: say 0..^Inf | ||
p6eval | rakudo 974d9a: ( no output ) | 05:17 | |
TimToady | rakudo: say (0..Inf).batch(10) | ||
p6eval | rakudo 974d9a: OUTPUT«Method 'batch' not found for invocant of class 'Range'current instr.: '_block14' pc 29 (EVAL_1:0)» | ||
TimToady | rakudo: say (0..Inf).iterator.batch(10) | ||
p6eval | rakudo 974d9a: OUTPUT«0123456789» | ||
TimToady | oughta do that automatically, methinks | ||
rakudo: say (0...*).batch(10) | 05:18 | ||
p6eval | rakudo 974d9a: OUTPUT«0123456789» | ||
TimToady | that one works | 05:19 | |
lue | I can't help but think about the possibility of built-in SDL/OpenGL support (thru Parrot). The upside is that it'd be a MAJOR perk over other languages. | ||
The downside is probable bloatedness | |||
new_perl6_hacker | diakopter why does perlcabal.org/~fglock/perlito.html give an error message to say 'hello,word!'; | 05:20 | |
japhb | lue: OpenGL support is just waiting on Tene to reenable the 'use OpenGL:from<parrot>;' notation (lost during the branch switch). kthakore++ is working on SDL | 05:21 | |
lue | \o/ Get ready for the flood of awesome (no doubt to be recorded by XKCD ;) ) | 05:22 | |
Tene | japhb: I've currently got nothing scheduled tomorrow. I'll try to fit it in then. | ||
japhb: although I should probably also look at the pcc refactor branch. | |||
japhb | Tene, \o/ | ||
aww. I hate tuit conflicts. :-/ | 05:23 | ||
lue | I got a Norweigan Blue Parrot for the occasion (of OpenGL/SDL implementation) :) | 05:24 | |
japhb | :-) | ||
Tene | japhb: with any luck, I'll feel conflicted and not work on either of them. :) | ||
japhb | :-P | ||
lue | Beautiful plumage, the Norweigan Blue. | 05:25 | |
japhb | Just to make you feel guilty, I'm writing WebGL code in JavaScript, because I can't have my OpenGL in Perl 6. | ||
That reminds me, I need to throw some tuits at plumage | |||
lue | Tene: if you don't work on anything parrot-related (due to conflict), then you're the pet shop owner :) | 05:26 | |
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new_perl6_hacker | Is perlcabal.org/~fglock/perlito.html the sprixel project? | 05:44 | |
TimToady | no | 05:46 | |
lue | goodbye, see you during the hackathon tomorrow | 05:49 | |
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uniejo | All Perl6 speaks today are moved into room 4A16 | 07:54 | |
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k23z__ | err .. | 09:32 | |
room 4A16 ? | |||
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arnsholt | k23z__: That's where we are, yes | 09:35 | |
The Copenhagen hackathon =) | 09:36 | ||
Su-Shee | good morning | 09:37 | |
arnsholt | 'morning Su-Shee | ||
k23z__ | hmm | 09:38 | |
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jonasbn | k23z__: where are you at? | 09:52 | |
k23z__: did you make it here or do you require guidance? | 09:53 | ||
mberends | heehee, the Copenhagen Perl 6 Hackathon has a good turnout, about 25 people :-) | ||
jnthnandmasakbot++ is giving what would have been moritz_++'s grammar and regex talk | 09:56 | ||
Su-Shee | 25 people? nice. you can do a lot with 25 people in 48 hours. | 09:57 | |
mberends | Yet Another Example of JIT talk preparation | ||
baest | :) | 09:58 | |
jonasbn | Su-Shee: we are not contribution right now, we are in the brainwash phase | ||
contributing even | |||
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Su-Shee | well I hope you've got fun and it's a great weekend. :) | 10:08 | |
mberends | :) | 10:09 | |
k23z__ | jonasbn: sorry for confusing you, I am not there , I am maybe 2000km away | 10:18 | |
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jonasbn | ah | 10:57 | |
hehehe | |||
lisppaste3 | baest pasted "Patch which ensures === returns bool not int" at paste.lisp.org/display/96001 | ||
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baest | based on github.com/rakudo/rakudo/commit/d4b...55845517e5 and github.com/rakudo/rakudo/commit/fd2...7e10487525 | 10:58 | |
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mberends | nom & | 11:02 | |
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masak | oh hai from Copenhagen, #perl6! | 12:03 | |
arnsholt | Oh hai from the next row, masak! | ||
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masak | mberends: lol I can see you both on- and offline! :D | 12:05 | |
jnthn++ is on now, by the way. | |||
giving his famous "solved in Perl 6" talk. | |||
mberends | masak: stop chattering and pay attention to the talk! | 12:06 | |
masak obliges :) | 12:07 | ||
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Su-Shee | oO(live from the benches in copenhagen.. ;) | 12:09 | |
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arnsholt | Su-Shee: Peanut gallery, more like ;) | 12:09 | |
pugssvn | r29952 | mberends++ | [docs/talks/p6.imp.2010.03.odp] slides of "Perl 6 Implementations in March 2010" from the Dutch Perl Workshop and the Copenhagen Perl 6 Hackathon 5th and 6th March 2010 (OpenOffice Presentation format) | 12:10 | |
ned | so jealous. | 12:13 | |
colomon | o/ | 12:23 | |
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quester | rakudo: augment class Int { method even { ? ( self % 2 ) } }; 42.even.say; | 12:33 | |
p6eval | rakudo 974d9a: OUTPUT«Method 'even' not found for invocant of class 'Integer'current instr.: '_block14' pc 29 (EVAL_1:0)» | ||
quester | rakudo: augment class Integer { method even { ? ( self % 2 ) } }; 42.even.say; | ||
p6eval | rakudo 974d9a: OUTPUT«Can't augment something that doesn't existcurrent instr.: 'perl6;Perl6;Grammar;add_name' pc 34122 (src/gen/perl6-grammar.pir:242)» | ||
quester wonders what class 42 really is... | 12:34 | ||
masak | my talk is online now. it's linked at the bottom of feather.perl6.nl/~masak/ | 12:35 | |
thanks to all the people on the channel who helped yesterday with the slides :) | 12:36 | ||
mberends | rakudo: say 42.WHAT # for quester | ||
p6eval | rakudo 974d9a: OUTPUT«Int()» | ||
colomon | rakudo: say PARROT(42) | 12:37 | |
p6eval | rakudo 974d9a: OUTPUT«Integer» | ||
colomon | rakudo: say PARROT(1+41) | ||
p6eval | rakudo 974d9a: OUTPUT«Integer» | ||
arnsholt | Ah, there are some issues with augmenting classes that come from Parrot, no? | ||
colomon | Might be more accurate to simple say there are issues with classes that come from Parrot. | 12:39 | |
I don't know if the augmenting is bad too or just a window into the problems. | |||
masak | the latter, methinks. | 12:40 | |
quester | mberends, colomon, masak: I think I've seen augments in some of the Rakudo internals. Hmm... can anyone suggest a good way of converting Integer to Int offhand? | 12:41 | |
masak | quester: what you're seeing is some kind of Parrot/Rakudo discrepancy that shouldn't really be visible. | 12:42 | |
colomon | rakudo: say pir::box__PI(42) | ||
p6eval | rakudo 974d9a: OUTPUT«42» | ||
colomon | rakudo: say PARROT( pir::box__PI(42)) | 12:43 | |
p6eval | rakudo 974d9a: OUTPUT«Integer» | ||
colomon | blast, that doesn't help. | ||
quester | rakudo: pir::box__PI(42).perl.even.say; | ||
p6eval | rakudo 974d9a: OUTPUT«Method 'even' not found for invocant of class 'String'current instr.: '_block14' pc 29 (EVAL_1:0)» | ||
quester ...String...? | 12:44 | ||
colomon | .perl returns Str | ||
well, String maybe. | |||
you're finding all the cracks this morning. | |||
quester | colomon: Thank you. Brain fail. | ||
colomon | and my fuddled brain isn't remembering how to work around them. | ||
masak | quester: 'String' is also a Parrot type. | 12:45 | |
quester | rakudo: "42".even.say; | 12:46 | |
p6eval | rakudo 974d9a: OUTPUT«Method 'even' not found for invocant of class 'Perl6Str'current instr.: '_block14' pc 29 (EVAL_1:0)» | ||
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quester | masak: Isnt Perl6Str supposed to be, um... hiddien away inside of Rakudo, too? | 12:47 | |
uniejo | rakudo: say (+pir::box__PI(42)).WHAT | ||
quester | s/hiddien/hidden/ | ||
p6eval | rakudo 974d9a: OUTPUT«Num()» | ||
masak | quester: yes, I think so. | ||
quester: sometimes error messages leak through. | |||
colomon | rakudo: say PARROT(42.Num.Int) | 12:48 | |
p6eval | rakudo 974d9a: OUTPUT«Int» | ||
colomon | aha! | ||
rakudo: augment class Int { method even { ? ( self % 2 ) } }; 42.Num.Int.even.say 41.Num.Int.even.saty | 12:49 | ||
p6eval | rakudo 974d9a: OUTPUT«Confused at line 11, near "42.Num.Int"current instr.: 'perl6;HLL;Grammar;panic' pc 500 (ext/nqp-rx/src/stage0/HLL-s0.pir:328)» | ||
masak | copypaste fail. | ||
colomon | rakudo: augment class Int { method even { ? ( self % 2 ) } }; 42.Num.Int.even.say; 41.Num.Int.even.say; | ||
p6eval | rakudo 974d9a: OUTPUT«01» | ||
TimToady | good morning | ||
colomon | So augment works, but .even is backwards. | ||
TimToady: o/ | |||
TimToady | who's winning? | ||
pmichaud | hello, #perl6 | 12:50 | |
colomon | \o | ||
masak | pmichaud! \o/ | ||
TimToady | hah, I beat pmichaud | ||
quester | colomon: Thank you. Err... yes, that would be another brain failure on my part, sorry... | ||
masak | pmichaud, TimToady: all the peeps here say OH HAI | ||
you'll soon be on-screen, I expect. | |||
pmichaud | OH HAI PEEPS! | ||
TimToady | OH HAI PEEPS!!! | ||
pmichaud | (hah, I beat TimToady) | 12:51 | |
TimToady | hah, beat pmichaud++ again on !!! |
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