»ö« Welcome to Perl 6! | perl6.org/ | evalbot usage: 'perl6: say 3;' or rakudo:, niecza:, std:, or /msg p6eval perl6: ... | irclog: irc.perl6.org/ | UTF-8 is our friend!
Set by sorear on 4 February 2011.
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supernovus Not sure if there's any demand for it, but my latest project is a template engine for Perl 6, inspired by Template Toolkit. It should work well with WWW::App to enable building MVC-style web apps in Perl 6. 00:03
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supernovus No code link yet. I just finished abandoning my Garden template language, which was a monstrosity. So, I'm starting from scratch for this project (currently using the very unoriginal name of Template6) 00:04
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sorear good * #perl6 01:36
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skids What are the current options for pod2* converters? 02:15
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sorear skids: not a p6 specific question, and I have no clue 03:01
skids: ask around on MAGnet... if Google won't help, I suggest maybe #toolchain 03:02
abercrombie Hi guys, a quick question: how do I test if the replacement got executed successfully in s/// expression? if $str ~~ s/../../ {..} doesn't work in this case. 03:04
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TimToady you can test $/ instead 03:17
perl6: $_ = 'foo'; say so s/food/bar/; say so $/
p6eval niecza v13-389-g852f0ff: OUTPUT«False␤False␤»
..rakudo ce5cca: OUTPUT«True␤False␤»
..pugs b927740: OUTPUT«*** No such subroutine: "&so"␤ at /tmp/2zlZDpLXG1 line 1, column 17-31␤»
TimToady perl6: $_ = 'foo'; say so s/foo/bar/; say ?$/
p6eval rakudo ce5cca, niecza v13-389-g852f0ff: OUTPUT«True␤True␤» 03:18
..pugs b927740: OUTPUT«*** No such subroutine: "&so"␤ at /tmp/NMB1ziZZHE line 1, column 17-30␤»
TimToady perl6: $_ = 'foo'; say ?s/foo/bar/; say ?$/
p6eval rakudo ce5cca, niecza v13-389-g852f0ff: OUTPUT«True␤True␤»
..pugs b927740: OUTPUT«1␤␤»
TimToady perl6: $_ = 'foo'; say ?s/goo/bar/; say ?$/
p6eval niecza v13-389-g852f0ff: OUTPUT«False␤False␤»
..rakudo ce5cca: OUTPUT«True␤False␤»
..pugs b927740: OUTPUT«1␤␤»
sorear rakudobug? nieczabug?
TimToady niecza looks correct 03:19
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TimToady though I like pugs answer, which follows P5 03:20
sorear doesn't pugs have the same result as rakudo? 03:21
pugs: say True
p6eval pugs b927740: OUTPUT«1␤»
sorear pugs: say True.WHAT
p6eval pugs b927740: OUTPUT«Bool␤»
TimToady perl6: $_ = 'foo'; say s/o/x/.perl; say $/.perl
p6eval niecza v13-389-g852f0ff: OUTPUT«Bool::True␤#<match from(1) to(2) text(o) pos([].list) named({}.hash)>␤» 03:22
..pugs b927740: OUTPUT«{subst}␤\Match.new(␤ ok => Bool::False, ␤ from => 0, ␤ to => 0, ␤ str => "", ␤ sub_pos => (), ␤ sub_named => {}␤)␤»
..rakudo ce5cca: OUTPUT«"fxo"␤Match.new(orig => "foo", from => 1, to => 2, ast => Any, list => ().list, hash => EnumMap.new())␤»
TimToady perl6: $_ = 'foo'; say s:g/o/x/.perl; say $/.perl
p6eval pugs b927740: OUTPUT«{subst}␤\Match.new(␤ ok => Bool::False, ␤ from => 0, ␤ to => 0, ␤ str => "", ␤ sub_pos => (), ␤ sub_named => {}␤)␤»
..niecza v13-389-g852f0ff: OUTPUT«Bool::True␤#<match from(2) to(3) text(o) pos([].list) named({}.hash)>␤»
..rakudo ce5cca: OUTPUT«"fxx"␤Match.new(orig => "foo", from => 2, to => 3, ast => Any, list => ().list, hash => EnumMap.new())␤»
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sorear why does Match have 'ok'? 03:22
TimToady perl6: $_ = 'foo'; say +s:g/o/x/; 03:23
p6eval pugs b927740: OUTPUT«*** Cannot cast from VSubst (MkSubst {substRegex = MkRulePGE {rxRule = "o", rxGlobal = True, rxStringify = False, rxAdverbs = VRef <Hash:0x7f58cdf77411>}, substExp = Ann (Cxt (CxtItem (mkType "Str"))) (Val (VStr "x"))}) to Double (VNum)␤ at /tmp/tlz2tpY9_T line 1…
..niecza v13-389-g852f0ff: OUTPUT«1␤»
..rakudo ce5cca: OUTPUT«0␤»
TimToady perl6: $_ = 'foo'; say +s:g/o/x/; .say 03:24
p6eval rakudo ce5cca: OUTPUT«0␤fxx␤» 03:25
..pugs b927740: OUTPUT«*** Cannot cast from VSubst (MkSubst {substRegex = MkRulePGE {rxRule = "o", rxGlobal = True, rxStringify = False, rxAdverbs = VRef <Hash:0x7f0ac715e459>}, substExp = Ann (Cxt (CxtItem (mkType "Str"))) (Val (VStr "x"))}) to Double (VNum)␤ at /tmp/udse4zbKvK line 1…
..niecza v13-389-g852f0ff: OUTPUT«1␤fxx␤»
TimToady eval: $_ = 'foo'; print s/o/x/g, "\n"; 03:26
buubot_backup TimToady: 2 1
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TimToady is there any good reason not to return the number of substitutions like P5 does? 03:27
hmm, I guess smartmatching rears its head there... 03:28
perl6: say True but 3
p6eval pugs b927740: OUTPUT«*** Cannot cast from VInt 3 to VCode (VCode)␤ at Prelude.pm line 541, column 5-16␤»
..rakudo ce5cca, niecza v13-389-g852f0ff: OUTPUT«True␤»
TimToady perl6: say +(True but 3)
p6eval pugs b927740: OUTPUT«*** Cannot cast from VInt 3 to VCode (VCode)␤ at Prelude.pm line 541, column 5-16␤»
..rakudo ce5cca, niecza v13-389-g852f0ff: OUTPUT«1␤»
benabik TimToady: True but 3 only overrides True.Bool 03:29
*.Int
(I hit that earlier)
TimToady perl6: say +(True but 3e0)
p6eval rakudo ce5cca, niecza v13-389-g852f0ff: OUTPUT«1␤»
..pugs b927740: OUTPUT«*** Cannot cast from VRat (3 % 1) to VCode (VCode)␤ at Prelude.pm line 541, column 5-16␤»
TimToady perl6: say +(True but 3.0e0) 03:30
p6eval rakudo ce5cca, niecza v13-389-g852f0ff: OUTPUT«1␤»
..pugs b927740: OUTPUT«*** Cannot cast from VRat (3 % 1) to VCode (VCode)␤ at Prelude.pm line 541, column 5-16␤»
TimToady perl6: say 3e0.WHAT
p6eval rakudo ce5cca, niecza v13-389-g852f0ff: OUTPUT«Num()␤»
..pugs b927740: OUTPUT«Rat␤»
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TimToady perl6: say +(True but Numeric(3)) # :) 03:31
p6eval pugs b927740: OUTPUT«*** No such subroutine: "&Numeric"␤ at /tmp/bLjyiwCgdm line 1, column 7-26␤»
..rakudo ce5cca: OUTPUT«Can only supply an initialization value for a role if it has a single public attribute␤ in sub infix:<but> at src/gen/CORE.setting:8854␤ in block <anon> at /tmp/cXHTWfUW21:1␤ in <anon> at /tmp/cXHTWfUW21:1␤»
..niecza v13-389-g852f0ff: OUTPUT«Unhandled exception: Role(s) being mixed in do not define precisely one, public attribute␤ at /home/p6eval/niecza/lib/CORE.setting line 1301 (infix:<does> @ 10) ␤ at /home/p6eval/niecza/lib/CORE.setting line 1304 (infix:<but> @ 3) ␤ at /tmp/6qOKeBJ_dy …
benabik :(
My suggestion was that "but" override all roles the new value has that the old doesn't. But then someone said Bool was supposed to be Numeric anyway. :- 03:32
TimToady I think we said once that smartmatching should treat a Match object the same as a Bool, and a Match can return both a boolean and a number 03:34
skids sorear: Thanks, but I meant the new P6 Pod. 03:46
TimToady a good project for someone would be translate all the docs to P6 pod 03:56
skids Well, not if they don't render like S26 doesn't :-) 04:35
TimToady so fix it! :) 04:43
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tadzik since when S26 doesn't? :) 05:07
haha, today _I'm_ awake before everybody :)
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sorear "before"? 05:16
:)
tadzik oh, from Europeans at least :)
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dalek ecs: 588f3ef | larry++ | S03-operators.pod:
move smartmatch toward treating Match like Bool
 05:27
ecs: e73bd99 | larry++ | S12-objects.pod:
Merge branch 'master' of github.com:perl6/specs
moritz good morning 05:32
tadzik good morning moritz
moritz TimToady: so 'foo' ~~ m/bar/ doesn't return a Match object anymore? 05:33
why?
TimToady it does, but because it's a Match object it doesn't rematch it against 'foo' 05:36
the Match passes through as if it were Bool
the table perhaps does not express this well 05:37
match if ?X just means it's evaluating the boolean aspect of the match
the result should still be X, the Match object
moritz then it would be clearer to mark it as X and not ?X 05:39
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dalek ecs: c7c7def | larry++ | S03-operators.pod:
? already implied by 'if' in header, moritz++
 05:58
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sorear TimToady: Do we really need more than one False Match? In Niecza all Matches other than Match itself are considered true 06:09
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TimToady well, sometimes I wish that Failure were the name of the false Match, just becuase Match() is a rotten name for something that didn't 06:11
also, failure to match is still a defined concept, I think 06:14
much like False is a defined concept 06:15
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TimToady but maybe the most useful thing would be if a failed match would just .gist to Nil 06:38
moritz erm
it's not a Nil, so it shouldn't .gist to Nil 06:39
that'd be just confusing for everybody
nom: say 'a' ~~ /b/
p6eval nom ce5cca: OUTPUT«#<failed match>␤»
TimToady I don't think so
perhaps Match(Nil)
Match() is just bad human engineering 06:40
and it's really quite likely that anything that returns Nil should fail smartmatch; the table entry for Nil is entirely redundant with $_ === Nil 06:49
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TimToady and if we do that, there's not much to stand in the way of actually returning Nil for a failed match 07:05
and like literal True or False, a literal ~~ Nil could elicit a warning 07:11
well, best sleep on that one 07:24
zzz &
tarch perl6: say "test"; 07:26
p6eval pugs b927740, rakudo ce5cca, niecza v13-389-g852f0ff: OUTPUT«test␤»
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tarch nom: say "test"; 07:47
p6eval nom ce5cca: OUTPUT«test␤» 07:48
moritz 'nom' and 'rakudo' are currently aliases on p6eval
tarch thanks...does the bot checks for too long running code? 07:50
moritz yes 07:51
it has also memory and fork limits
nom: loop { }
p6eval nom ce5cca: OUTPUT«(timeout)»
tarch nom: my @arr = <<a b c d e f>>; 0..^+@arr; 07:52
p6eval nom ce5cca: ( no output )
tarch nom: my @arr = <<a b c d e f>>; 0..^@arr; 07:53
p6eval nom ce5cca: ( no output )
moritz tarch: you need to print() or say() something 07:54
tarch: the bot only captures output, not return values
(we had it capture return values back in the days, and it confused the heck out of everyone)
tarch yes I know this....I was just testing out the fact that on my machine on nom the second example takes forever... 07:55
moritz in the interactive environment?
tarch no 07:56
moritz because there's really no reason why it would loop on constructing the range, if it didn't do anything with it
tarch I mean...I haven't tried
moritz nom: my @arr = <<a b c d e f>>; ~ 0..^@arr;
p6eval nom ce5cca: ( no output )
moritz nom: my @arr = <<a b c d e f>>; say ~ 0..^@arr;
p6eval nom ce5cca: OUTPUT«"0"..^["a", "b", "c", "d", "e", "f"]␤»
moritz nom: my @arr = <<a b c d e f>>; say ~(0..^@arr);
p6eval nom ce5cca: OUTPUT«(timeout)»
moritz I guess we really need to special-case that one 07:57
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sorear hello, tarch 08:25
tarch hellp
hello
sorear welcome 08:26
tarch thank you very much! :)
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mathw lo 08:49
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moritz www.fanfiction.net/s/5782108/77/ now has a status update at least 09:56
grondilu perl6: say 6981106388 +> 2; 09:57
p6eval niecza v13-389-g852f0ff: OUTPUT«-402207051␤»
..pugs b927740, rakudo ce5cca: OUTPUT«1745276597␤»
grondilu perl6: say 6981106388 +> 2 :!signed;
p6eval niecza v13-389-g852f0ff: OUTPUT«Unhandled exception: Excess arguments to infix:<+>>, unused named signed␤ at /home/p6eval/niecza/lib/CORE.setting line 0 (infix:<+>> @ 1) ␤ at /tmp/4kMz6L2kgv line 1 (mainline @ 2) ␤ at /home/p6eval/niecza/lib/CORE.setting line 3606 (ANON @ 3) ␤ at /h… 09:58
..rakudo ce5cca: OUTPUT«===SORRY!===␤Confused␤at /tmp/OstLyfc76Z:1␤»
..pugs b927740: OUTPUT«pugs: Named argument found where no matched parameter expected: (signed,Val (VBool False))␤»
grondilu perl6: say 6981106388 +> 2 :unsigned;
p6eval niecza v13-389-g852f0ff: OUTPUT«Unhandled exception: Excess arguments to infix:<+>>, unused named unsigned␤ at /home/p6eval/niecza/lib/CORE.setting line 0 (infix:<+>> @ 1) ␤ at /tmp/BhLOU7zCw6 line 1 (mainline @ 2) ␤ at /home/p6eval/niecza/lib/CORE.setting line 3606 (ANON @ 3) ␤ at …
..pugs b927740: OUTPUT«pugs: Named argument found where no matched parameter expected: (unsigned,Val (VBool True))␤»
..rakudo ce5cca: OUTPUT«===SORRY!===␤Confused␤at /tmp/1WDlJsXe9s:1␤»
grondilu How do I use the unsigned version of +> ?
(if it has been implemented, that is) 09:59
moritz what does +> do again? 10:00
nom: say 5 +> 2 10:01
p6eval nom ce5cca: OUTPUT«1␤»
moritz nom: say 5 +> 1
p6eval nom ce5cca: OUTPUT«2␤»
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grondilu numeric right shift. In javascript there is >> and >>>, for signed and unsigned. In perl6 we are supposed to depend on argument types or use the :signed adverb. But there is no unsigned type implemented in rakudo, is ther? 10:04
moritz no, there isn't
can't you simply divide by 2**$n? 10:05
grondilu I tried. Doesn't work for obscure reasons.
rakudo: say 6981106388 / 2
p6eval rakudo ce5cca: OUTPUT«3490553194␤»
grondilu niecza: say 6981106388 / 2
p6eval niecza v13-389-g852f0ff: OUTPUT«3490553194␤»
grondilu niecza: say 6981106388 +> 2
p6eval niecza v13-389-g852f0ff: OUTPUT«-402207051␤»
grondilu niecza: say 6981106388 +> 1
p6eval niecza v13-389-g852f0ff: OUTPUT«-804414102␤» 10:06
grondilu rakudo: say :2(sprintf "%b", 6981106388) +> 1;
p6eval rakudo ce5cca: OUTPUT«3490553194␤»
grondilu rakudo: say 6981106388 +> 1; 10:07
p6eval rakudo ce5cca: OUTPUT«3490553194␤»
grondilu hahh I don' get it
tadzik rakudo: say :2(sprintf "%b", 6981106388 +> 1)
p6eval rakudo ce5cca: OUTPUT«3490553194␤»
grondilu I need to find a clearer example of why I can't use it 10:08
moritz grondilu: I know that rakudo implements some operations with system integers instead of bigints if you use literals
that might add a bit of confusion 10:09
grondilu I guess
rakudo: my $a = 6981106388; say :2(sprintf "%b", $a) +> 1;
p6eval rakudo ce5cca: OUTPUT«3490553194␤»
grondilu damn it
Hang on, in javascript for instance, 6981106388 >>> 0 returns 2686139092 10:11
perl6: say 2686139092 +> 0;
p6eval niecza v13-389-g852f0ff: OUTPUT«-1608828204␤»
..pugs b927740, rakudo ce5cca: OUTPUT«2686139092␤»
grondilu see ?
moritz why would a bit-shift by 0 do anything? 10:12
grondilu because it turns a signed to an unsigned, I guess.
rakudo: printf "%b", 2686139092; 10:13
p6eval rakudo ce5cca: OUTPUT«10100000000110110011101011010100»
grondilu rakudo: printf "%b", 2686139092 +> 0;
p6eval rakudo ce5cca: OUTPUT«10100000000110110011101011010100»
grondilu hahh 10:14
moritz akudo: printf "%b", -2686139092
rakudo: printf "%b", -2686139092
p6eval rakudo ce5cca: OUTPUT«1111111111111111111111111111111101011111111001001100010100101100»
moritz pugs: printf "%b", -2686139092
p6eval pugs b927740: OUTPUT«1111111111111111111111111111111111111111111111111111111111111111111111111111111111111110»
moritz niecza: printf "%b", -2686139092 10:15
p6eval niecza v13-389-g852f0ff: OUTPUT«1»
moritz three compilers, three answers
grondilu For what it's worth, I was confronted to this while trying to translate crypto-js.googlecode.com/files/2.5....-sha256.js 10:16
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dalek ast: 2f7692d | moritz++ | S06-advanced/wrap.t:
RT #69312, repeated &routine.wrap in a loop
 11:19
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moritz std: if 0 { succeed } 11:31
p6eval std 48335fc: OUTPUT«ok 00:01 108m␤»
moritz nom: if 0 { succeed }
p6eval nom ce5cca: ( no output )
moritz is succeed dynamically scoped? 11:32
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passr perl6: say my @c = grep { [<] .comb }, [X~] [^5] xx 4 12:00
p6eval pugs b927740: OUTPUT«*** ␤ Unexpected "["␤ expecting bare or pointy block construct, ":", identifier, operator or ","␤ at /tmp/01srY6lGQE line 1, column 33␤»
..niecza v13-389-g852f0ff: OUTPUT«Potential difficulties:␤ @c is declared but not used at /tmp/OfduZYzVI1 line 1:␤------> say my ⏏@c = grep { [<] .comb }, [X~] [^5] xx 4␤␤Unhandled exception: Excess arguments to ANON, used 2 of 4 positionals␤ at /tmp/OfduZYzVI1 line 0…
..rakudo ce5cca: OUTPUT«0123 0124 0134 0234 1234␤»
passr perl6: my @c = grep { [<] .comb }, [X~] [^5] xx 4;say @c 12:01
p6eval pugs b927740: OUTPUT«*** ␤ Unexpected "["␤ expecting bare or pointy block construct, ":", identifier, operator or ","␤ at /tmp/CFcl07jyvs line 1, column 29␤»
..niecza v13-389-g852f0ff: OUTPUT«Unhandled exception: Excess arguments to ANON, used 2 of 4 positionals␤ at /tmp/aCL00_tWft line 0 (ANON @ 1) ␤ at /home/p6eval/niecza/lib/CORE.setting line 2268 (reduceop @ 9) ␤ at /tmp/aCL00_tWft line 1 (mainline @ 3) ␤ at /home/p6eval/niecza/lib/COR…
..rakudo ce5cca: OUTPUT«0123 0124 0134 0234 1234␤»
passr perl6: my @d = grep { [!=] .comb.sort }, [X~] [^5] xx 4;say @d 12:02
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p6eval niecza v13-389-g852f0ff: OUTPUT«Unhandled exception: Excess arguments to ANON, used 2 of 4 positionals␤ at /tmp/sfMc6ArS5y line 0 (ANON @ 1) ␤ at /home/p6eval/niecza/lib/CORE.setting line 2268 (reduceop @ 9) ␤ at /tmp/sfMc6ArS5y line 1 (mainline @ 3) ␤ at /home/p6eval/niecza/lib/COR… 12:02
..rakudo ce5cca: OUTPUT«0123 0124 0132 0134 0142 0143 0213 0214 0231 0234 0241 0243 0312 0314 0321 0324 0341 0342 0412 0413 0421 0423 0431 0432 1023 1024 1032 1034 1042 1043 1203 1204 1230 1234 1240 1243 1302 1304 1320 1324 1340 1342 1402 1403 1420 1423 1430 1432 2013 2014 2031 2034 2041 …
..pugs b927740: OUTPUT«*** ␤ Unexpected "["␤ expecting bare or pointy block construct, ":", identifier, operator or ","␤ at /tmp/NgIvVArLO8 line 1, column 35␤»
passr \o/ 12:03
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passr hi perl6, a smallquestion, why perl6 so slow,what's the bottleneck? 12:06
gfldex there is no single bottleneck 12:07
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gfldex in your example i would guess is the lack of inlining of operators 12:09
passr gfldex: how to improve it ? 12:11
gfldex i think it would help to clone jnthn a few times
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gfldex having a jit for parrot would help too 12:12
passr gfldex: but perl6 is slow now. 12:13
gfldex indeed
perl 6 is largely written in perl 6 what is not helping the cause
passr bottleneck?
slow in parrot?or perl6 ? 12:14
gfldex both
Timbus what do you call a bottleneck if the entire bottle is the same size and shape as the neck
passr Timbus: any example ? 12:15
Timbus what i mean is, its all slow. there is no neck 12:16
passr that's too bad. 12:17
gfldex it's gotten a lot faster the last 6 month
passr agree absolutily 12:18
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passr Timbus: is there any pernutation and combination method for perl6? 12:19
permutation! 12:20
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moritz Timbus: (bottle without neck) cylinder! 12:28
nom: use Test; eval_dies_ok 'succeed' 12:32
p6eval nom ce5cca: OUTPUT«ok 1 - ␤»
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moritz niecza: use Test; eval_dies_ok 'succeed' 12:36
p6eval niecza v13-389-g852f0ff: OUTPUT«not ok 1␤# /tmp/CW8HlZsIuM line 1␤»
moritz niecza: succeed
p6eval niecza v13-389-g852f0ff: ( no output )
moritz niecza: succeed; say 'alive' 12:37
p6eval niecza v13-389-g852f0ff: ( no output )
moritz niecza: succeed; say 'alive'; END { say 'end' }
p6eval niecza v13-389-g852f0ff: OUTPUT«end␤»
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[Coke] Would it be fair to have a "build time" chart? ;) 13:48
moritz maybe :-) 13:52
if you include parrot and nqp build times in rakudo build, you also need to include mono build times in niecza build :-)
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[Coke] ah, well, uh, that's... too much work, then. ;) 13:56
mathw I don't think it's a particularly useful thing to track 13:57
moritz fwiw I did some (very non-scientific) speed comparisons on the p6cc solutions for t1 and t2
13:57 xinming joined
moritz some of them work on both rakudo and niecza 13:57
mathw if people say it compiles too slowly just tell them the wait is worth it for the awesome Perl 6 they'll be able to write afterwards
[Coke] mathw: no, me neither. Just very striking when I kick off the spec test comparisons, especiallywhen rakudo has a new nqp which has a new parrot.
mathw moritz: awesome 13:58
moritz niecza is about a factor 3 to 4 faster at run time
[Coke] moritz: mine failed to work on niecza, and I never came back to figure out why. :(
[Coke] was sad.
mathw aaaw
that is sad
moritz and seems that niecza is a bit slower to compile stuff
mathw maybe it does more work at compile time? 13:59
it fits the usual expectation really :) 14:00
slower compile -> more optimising -> faster runtime
but remember to be fair to Rakudo, Niecza has had speed as an explicit goal from the start
moritz otoh rakudo has had more time to speed things up :-) 14:01
[Coke] rakudo: say '(foo)' ~~ /'(' ~ ')' .*?/ #RT 68854 14:02
p6eval rakudo ce5cca: OUTPUT«Unable to parse _block1011, couldn't find final ')'␤ in FAILGOAL at src/stage2/QRegex.nqp:1202␤ in regex <anon> at /tmp/Zi9Bf0825Y:1␤ in method ACCEPTS at src/gen/CORE.setting:7655␤ in block <anon> at /tmp/Zi9Bf0825Y:1␤ in <anon> at /tmp/Zi9Bf0825Y:1␤»…
mathw moritz: true, but it's only recently got into a position to have speed work 14:03
[Coke] that ticket (RT 68854) was last touched by pmichaud who said it was probably working right, but the spec might need tweaking (in 2009). Can someone put it out of its misery? 14:04
moritz nom: say '(foo)' ~~ /'(' ~ ')' .*?/
p6eval nom ce5cca: OUTPUT«Unable to parse _block1011, couldn't find final ')'␤ in FAILGOAL at src/stage2/QRegex.nqp:1202␤ in regex <anon> at /tmp/_4LyVWzhD1:1␤ in method ACCEPTS at src/gen/CORE.setting:7655␤ in block <anon> at /tmp/_4LyVWzhD1:1␤ in <anon> at /tmp/_4LyVWzhD1:1␤»
[Coke] rakudo: class A { method Str() { for ^1 {} } }; say ~A.new #RT 71270
p6eval rakudo ce5cca: OUTPUT«␤»
moritz niecza: say '(foo)' ~~ /'(' ~ ')' .*?/
p6eval niecza v13-389-g852f0ff: OUTPUT«Unhandled exception: Unable to parse anonymous regex␤Couldn't find final ')'; gave up␤ at /home/p6eval/niecza/lib/CORE.setting line 1344 (die @ 3) ␤ at /home/p6eval/niecza/lib/CORE.setting line 2464 (Cursor.FAILGOAL @ 5) ␤ at /tmp/ddp7b7Okcp line 1 (AN…
[Coke] rakudo: "abc" ~~ /()/ # RT 73940 14:06
p6eval rakudo ce5cca: OUTPUT«===SORRY!===␤Unrecognized regex metacharacter (must be quoted to match literally) at line 1, near "/ # RT 739"␤»
[Coke] rakudo: multi foo(Int $x is rw) { say "writable" }; multi foo(Int $x) { "readonly" }; foo(42) #RT #74414 14:07
p6eval rakudo ce5cca: OUTPUT«Ambiguous dispatch to multi 'foo'. Ambiguous candidates had signatures:␤:(Int $x is rw)␤:(Int $x)␤␤ in block <anon> at /tmp/6PdwoSOPyM:1␤ in <anon> at /tmp/6PdwoSOPyM:1␤»
[Coke] rakudo: my Any %.x=3,%.x; #RT #73232 14:09
p6eval rakudo ce5cca: OUTPUT«Useless declaration of a has-scoped method in mainline␤Null PMC access in find_method('x')␤ in block <anon> at /tmp/AGDZSzesDD:1␤ in <anon> at /tmp/AGDZSzesDD:1␤»
moritz the has-self branch tries to fix that (and other problems) 14:10
[Coke] rakudo: subset Foo::Bar of Int where { $_ %% 2 }; my Foo::Bar $i #RT #80930
moritz sadly I'm stuck
p6eval rakudo ce5cca: ( no output )
[Coke] rakudo: subset Foo::Bar of Int where { $_ %% 2 }; my Foo::Bar $i # RT #80930 14:11
p6eval rakudo ce5cca: ( no output )
sjn o/ 14:14
[Coke] jnthn: here's an attribute segfault for you: rt.perl.org/rt3/Ticket/Display.html?id=77070 14:15
jnthn: hio
er, sjn: hio.
tadzik hello sjn
[Coke] rakudo: $_ = "0"; s/-/1/; # RT #77110 14:16
p6eval rakudo ce5cca: OUTPUT«===SORRY!===␤Unrecognized regex metacharacter (must be quoted to match literally) at line 1, near "/1/; # RT "␤»
sjn So, anyone here interested in coming to Oslo for a Perl 6 hackathon? :) gist.github.com/1711730 14:17
[Coke] rakudo: "foo" ~~ /(foo)/; say "$0a" #RT #74180
p6eval rakudo ce5cca: OUTPUT«===SORRY!===␤Method 'ast' not found for invocant of class 'Undef'␤»
[Coke] rakudo: class A is A {}; say A.new; #RT #81058 14:18
p6eval rakudo ce5cca: OUTPUT«===SORRY!===␤No applicable candidates found to dispatch to for 'trait_mod:<is>'. Available candidates are:␤:(Attribute:D $attr, Any :rw(:$rw)!)␤:(Attribute:D $attr, Any :readonly(:$readonly)!)␤:(Attribute:D $attr, Any :box_target(:$box_target)!)␤:(Routine:D $r, Any…
PerlJam sjn: that looks like a hack-the-community hackathon.
[Coke] rakudo: class A { ... }; class B is A {}; class A {} #RT #81060
p6eval rakudo ce5cca: ( no output )
[Coke] rakudo: class A { ... }; say A.WHAT #RT 81060
p6eval rakudo ce5cca: OUTPUT«===SORRY!===␤The following packages were stubbed but not defined:␤ A␤␤»
sjn PerlJam: maybe a little 14:19
PerlJam: it's a hackathon though. if people just want to meet up and hack, that's fine
moritz sjn: sounds awesome, and I'd really love to go, but it's unlikely that I'll be able to do much perl-related travelling this year 14:20
[Coke] rakudo: my ($foo, $bar = "baz") = <a>; say "$foo $bar" #RT #74664
p6eval rakudo ce5cca: OUTPUT«a ␤»
sjn moritz: even weekend trips, with some sponsoring? :)
moritz sjn: well, maybe :-) 14:21
sjn moritz: well in that case, check your calendar
moritz sjn: I will, when I get home
sjn April 20-22 14:22
[Coke] rakudo: say "1ab2ab3c" ~~ /^ \d ** abc $/ ?? "OH NOES" !! "oh phew" #RT 72440 14:24
p6eval rakudo ce5cca: OUTPUT«OH NOES␤» 14:25
[Coke] rakudo: say 6 >== 2
p6eval rakudo ce5cca: OUTPUT«Cannot assign to a non-container␤ in block <anon> at /tmp/Z1nrj9myoc:1␤ in <anon> at /tmp/Z1nrj9myoc:1␤»
moritz niecza: say "1ab2ab3c" ~~ /^ \d ** abc $/ ?? "OH NOES" !! "oh phew" 14:26
p6eval niecza v13-389-g852f0ff: OUTPUT«Potential difficulties:␤ Unsupported use of atom ** a as separator; nowadays please use atom+ % a at /tmp/PNZdbiBWqB line 1:␤------> say "1ab2ab3c" ~~ /^ \d ** a⏏bc $/ ?? "OH NOES" !! "oh phew"␤␤oh phew␤»
moritz niecza: say "1ab2ab3c" ~~ /^ \d+ % abc $/ ?? "OH NOES" !! "oh phew"
p6eval niecza v13-389-g852f0ff: OUTPUT«oh phew␤»
[Coke] masak: can you provide a code snippet to make it easier to test rt.perl.org/rt3/Ticket/Display.html?id=78200 ?
moritz nom: say "1ab2ab3c" ~~ /^ \d+ % abc $/ ?? "OH NOES" !! "oh phew"
p6eval nom ce5cca: OUTPUT«OH NOES␤»
[Coke] rakudo: class Car { has @.wheels }; say Car.^attributes.perl #RT 78316 14:27
p6eval rakudo ce5cca: OUTPUT«(Attribute.new(),)␤»
[Coke] rakudo: my @a = 1, 2, 3; my @b; my $c = @b[0] = @a[1]; say $c; say @b[0]; # RT 80614 14:29
p6eval rakudo ce5cca: OUTPUT«2␤Any()␤»
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moritz nom: say 107 / 18 # speed ration between rakudo and niecza on [Coke]'s t1 solution, once fixed to run on niecza 14:29
p6eval nom ce5cca: OUTPUT«5.94444444444444␤»
moritz erm, time ratio :-) 14:30
Yary .msg p6eval perl6:class A{has @!q;method new($x){self.bless(*,:q(1..$x))}; method qp{say @!q[0]}};A.new(3).qp
[Coke] rakudo: say 0 ~~ 0 ~~ 0 # RT 81336
p6eval rakudo ce5cca: OUTPUT«False␤»
[Coke] rakudo: [+]; say "I am ok!" #RT 80332 14:31
p6eval rakudo ce5cca: OUTPUT«===SORRY!===␤Preceding context expects a term, but found infix [+] instead at line 1, near "; say \"I a"␤»
[Coke] std: [+]; say "I am ok!" #RT 80332
p6eval std 48335fc: OUTPUT«ok 00:01 110m␤»
[Coke] rakudo: my $.foo; say "alive"; $.foo # RT 80008
p6eval rakudo ce5cca: OUTPUT«Useless declaration of a has-scoped method in mainline␤alive␤Null PMC access in find_method('foo')␤ in block <anon> at /tmp/SJaI203Lww:1␤ in <anon> at /tmp/SJaI203Lww:1␤» 14:32
Yary How do I initialize a private array attribute in a "new" method? 14:34
nom: class A{has @!q;method new($x){self.bless(*,:q(1..$x))}; method qp{say @!q[0]}};A.new(3).qp 14:35
p6eval nom ce5cca: OUTPUT«Any()␤»
Yary I was expecting to see "1" there
pmichaud good morning, #perl6 14:36
moritz \o pmichaud
[Coke] hey, pmi. 14:37
moritz nom: class A { has @.q; method new ($x) { self.bless(*,:q(1..$x)) } }; say A.new(3).q.perl
p6eval nom ce5cca: OUTPUT«Array.new(1, 2, 3)␤»
[Coke] b: say 19593-19489 ; # 02/01/2012 - niecza at 99.46%
p6eval b 1b7dd1: OUTPUT«104␤»
moritz nom: class A { has @.q; method new ($x) { self.bless(*,:q(1..$x)); method pq { say @!q[0] } }; say A.new(3).pq 14:38
p6eval nom ce5cca: OUTPUT«===SORRY!===␤Unable to parse blockoid, couldn't find final '}' at line 2␤»
moritz nom: class A { has @.q; method new ($x) { self.bless(*,:q(1..$x)) }; method pq { say @!q[0] } };A.new(3).pq
p6eval nom ce5cca: OUTPUT«1␤»
moritz nom: class A { has @!q; method new ($x) { self.bless(*,:q(1..$x)) }; method pq { say @!q[0] } };A.new(3).pq
p6eval nom ce5cca: OUTPUT«Any()␤»
moritz Yary: ah, the problem is that .bless doesn't initialize private attributes 14:39
you can change that with a BUILD submethod
Yary moritz: thanks
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moritz nom: class A { has @!q; method new ($x) { self.bless(*,:q(1..$x)) }; submethod BUILD(:@!q) { }; method pq { say @!q[0] } };A.new(3).pq 14:39
p6eval nom ce5cca: OUTPUT«1␤»
Yary moritz: ahh... that's a bit of a pain but know that I know...
moritz Yary: it seems to surprise a lot of people, and it surprised me too 14:40
Yary is that part of the design or how the implementation is?
moritz Yary: the step of filtering out private attributes need to happen somewhere, I assumed it's in the default .new, but rakudo implements in in .bless or BUILDALL
pmichaud I'm pretty sure it's spec. 14:41
moritz Yary: I think the spec just says that .new() now doesn't initialize private attributes, but I don't think it it says *where* that filtering step happens
(but i could be wrong)
pmichaud Note that the default C<BUILD>
will only initialize public attributes; you must write your own C<BUILD>
(as above) in order to present private attributes as part of your
initialization API.
S12:878 14:42
moritz ah, and it's specced that .bless (indirectly) calls BUILD
so rakudo is correct here
Yary I understand the rationale of not letting private attributes leak out, but there still strikes me as something a bit wrong about it. Disallowing "bless" to know about private attriubutes is ok.... 14:43
but... let me work up another example...
pmichaud Yary: it used to be the other way (private attributes were initialized by bless), but was changed to the current spec.
moritz pmichaud: but the discussion that led to it only discussed it on the .new level, not on the .bless level 14:44
[Coke] gets us back up to 92 tickets needing tests.
b: say 649-92; #RT
p6eval b 1b7dd1: OUTPUT«557␤»
pmichaud moritz: oh, that's a reasonable point
I suppose .bless could handle private attributes even if the default BUILD doesn't
Yary nom: class A{has $!q;method new($x){self.bless(*),$!q=>$x}};A.new(3) 14:45
pmichaud seems weird that we'd need an extra level of filtering in that case, though.
p6eval nom ce5cca: OUTPUT«Cannot look up attributes in a type object␤ in method new at /tmp/PDSckbEOAA:1␤ in block <anon> at /tmp/PDSckbEOAA:1␤ in <anon> at /tmp/PDSckbEOAA:1␤»
[Coke] I think any RTs with [spec] should (first approximation) be on the spec github queue instead.
moritz pmichaud: when writing custom .new methods, one wants a primitive that easily handles private attributes; it's fine if the default .new doesn't take that way
Yary in there,
"bless" isn't touching the private attribute $!q
moritz Yary: your're calling it wrongly
pmichaud Yary: that's because you're referring to the $!q of the A type object 14:46
moritz self.bless(*) # no named arguments to bless
Yary ugh
and I have a comma instead of a semicolon
let's try again
14:47 estrabd left, Gothmog_ left
Yary hmm I can't seem to get it "right"- 14:47
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Yary nom: class A{has $q;method new($x){self.bless(*);$q=>$x}};A.new(3) 14:47
p6eval nom ce5cca: OUTPUT«Cannot look up attributes in a type object␤ in method new at /tmp/UGQK07f4Kc:1␤ in block <anon> at /tmp/UGQK07f4Kc:1␤ in <anon> at /tmp/UGQK07f4Kc:1␤»
Yary still the type object
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moritz_ lag-- 14:48
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tadzik nom: class A { has $!q; method new { self.bless(*, q=>7) }; method foo { say $!q } }; A.new.foo 14:48
p6eval nom ce5cca: OUTPUT«Any()␤» 14:49
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Yary tadzik: I think that's the spec saying we can't touch private attributes in "bless" 14:50
pmichaud [Coke]: ([spec]) makes sense; some of the [spec] tickets pre-date when the specs were in github
also, sometimes someone may post a rakudobug that needs to be treated as a specbug instead (not common, I admit)
moritz: perhaps there should be an analog to BUILD that also handles private attributes
or that only handles private attributes
self.bless(*, :public(...)).PRIVATE( :priv1(...), :priv2(...) )
moritz Yary: but after correcting that, your point is valid, IMHO
14:50 moritz left
tadzik Yary: I agree with you 14:50
I'm just pointing that out :)
pmichaud so the above could be 14:51
[Coke] pmichaud: yah, I don't really want to do another ticket migration, even if it's a small one. ;) perhaps we can pester @Larry with one a week until they're gone.
Yary OK so here's the thing... can one set (or read) a private attribute of an object in a "new" method, after calling bless?
[Coke] adds the LTA, regex, and rule tickets back into his "check if they're closable" bucket.
moritz_ Yary: did you see my example with BUILD for setting the private attribute directly in bless? 14:52
pmichaud [Coke]: I agree, no point in migrating, unless the github queue is where @Larry typically looks for spec issues
[Coke] pmichaud: yah, I think that's irc backscroll.
Yary moritz: Yes... and I am already using BUILD in another object to set private attributes
pmichaud class A { has $!q; method new { self.bless(*).PRIVATE( q=>7 ) } }; # example 14:53
(if some form of .PRIVATE were available)
moritz_ pmichaud: I don't like that API (more)
Yary moritz: and I just had a reaction that's hard to explain
moritz_ pmichaud: it requires 1) another method call and 2) modifying the object after it has been created
Yary moritz: it started with this example-
moritz_ (which isn't great for value types) 14:54
Yary perlgeek.de/blog-en/perl-6/object-c....writeback
pmichaud well, even bless "modifies the object after it has been created", in a sense.
moritz_ I'd rather have a .bless-priv that treats all attributes equally
pmichaud that works for me also
moritz_ (name to be discussed :-)
pmichaud .blesspriv works :) 14:55
.blessall
moritz_ pmichaud: (re modifies after creation) yes, depends on where you mentally put the "object is now created" marker
and for me that's as soon as .bless returns
Yary so I came away with "BUILD" needs named parameters, and "new" does not
moritz_ the default .new only takes named arguments, but you can write your own to do whatever you like 14:56
but if you write a BUILD submethod, you must stick to the internal API (which is named only)
Yary OK I think that is the crux
If I want to initialize a private attribute, but don't want to use named attributes in the public "new" method, what does one do? 14:57
(scrolling back to see your examples)
moritz_ submethod BUILD(:$y, :$z) { $!x = $y + $z } # for example 14:58
Yary OK I understand moritz++ example now 14:59
just saw it in the scrollback
you need a "new" that passes arguments to the submethod BUILD
moritz_ well, new calls bless, bless calls BUILDALL which calls BUILD 15:00
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Yary thanks 15:04
15:07 tokuhirom left 15:15 xinming left 15:17 birdwindupbird left
Yary aww darn. Now how does one set both a private and a public in "new"... 15:19
nom: class A{has $.b;has $!x;submethod BUILD(:$.b,:$!x){ };method new($a){self.bless(*,b=>"b :-) $a",x=>"x (-: $a")}};A.new(3)
p6eval nom ce5cca: OUTPUT«Cannot assign to a readonly variable or a value␤ in submethod BUILD at /tmp/SW9DNyjea9:1␤ in method BUILDALL at src/gen/CORE.setting:583␤ in method bless at src/gen/CORE.setting:573␤ in method new at /tmp/SW9DNyjea9:1␤ in block <anon> at /tmp/SW9DNyjea9:1␤ in <a…
Yary nom: class A{has $.b;has $!x;submethod BUILD(:$!x){ };method new($a){self.bless(*,b=>"b :-) $a",x=>"x (-: $a")}};A.new(3).b
p6eval nom ce5cca: ( no output )
Yary nom: class A{has $.b;has $!x;submethod BUILD(:$!x){ };method new($a){self.bless(*,b=>"b :-) $a",x=>"x (-: $a")}};say A.new(3).b
p6eval nom ce5cca: OUTPUT«Any()␤»
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Yary Why did BUILD complain about assigning a readonly variable in the first example? 15:23
Did
"bless" already assign it?
apparently not, because the 2nd example shows $.x is uninitialized 15:24
sorry $.b is uninitialized
moritz_ Yary: you need to assign to $!b, not $.b
Yary: $.b is just a short form for $( self.b ), and usually is read-only 15:25
Yary wow, that works
nom: class A{has $.b;has $!x;submethod BUILD(:$!b,:$!x){ };method new($a){self.bless(*,b=>"b :-) $a",x=>"x (-: $a")}};A.new(3)
p6eval nom ce5cca: ( no output )
Yary nom: class A{has $.b;has $!x;submethod BUILD(:$!b,:$!x){ };method new($a){self.bless(*,b=>"b :-) $a",x=>"x (-: $a")}};say A.new(3)
p6eval nom ce5cca: OUTPUT«A.new(b => "b :-) 3")␤»
15:25 Gothmog_ joined
Yary I thought the "!" was only for private attributes 15:26
tadzik every attribute is private, I think. It may have a public accessor though
Yary ah ok
15:26 xinming left
eviltwin_b ^^ is how I understand it, the $!foo is the real thing, the $.foo form creates a public accessor 15:26
tadzik ywis 15:27
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moritz_ that's correct 15:31
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TimToady in a system with arbitrary precision integers, negative 2's complement is represented by an infinite number of 1's on the left, so since we can't represent that, we always store positive plus the sign 16:08
and bit shifts should never change the sign
arguably, .fmt('%b') should print the sign if negative 16:09
we can't show the leading ones without something to tell us how long it is supposed to be; pugs is just guessing
moritz_ as is rakudo 16:10
nom: say (-1).fmt('%b').chars
p6eval nom ce5cca: OUTPUT«64␤»
TimToady yes
moritz_ well, assuming, not guessing :-)
TimToady well, guessing 64-bit integers is likely to match native int for some time in the future on many machines, but it's still kinda wrongish to assume that 16:11
in the absense of instruction to truncate
moritz_ aye
TimToady unless we go back to a notion of printfs all coercing to a native type first
which seems a bit too retro for Perl 6 16:12
moritz_ fears that in the end, we'll have to reimplement sprintf
one reason is that our sprintf will need to know about our coercion rules 16:13
hey, wouldn't that be a nice GSoC project?
can be done in pure Perl 6, portable between rakudo and niecza, lots of tests to be stolen from C and perl 5 16:14
with limited scope, but big enough to keep the student busy
TimToady I don't fear that we'll re-implement sprintf, but that we won't 16:16
likewise I fear that we won't re-implement Unicode
TimToady hates relying on things like ICU
without implementing your own version of something, you can never be more portable than your dependencies 16:17
moritz_ TimToady: isn't sorear++ already reimplementing ICU-stuff for the regex engine in niecza? 16:18
TimToady yes, a good start on it anyway 16:19
perl6: say (^2**256).pick.fmt('%256b') 16:21
p6eval niecza v13-389-g852f0ff: OUTPUT«(timeout)» 16:22
..pugs b927740: OUTPUT«pugs: out of memory (requested 1048576 bytes)␤»
..rakudo ce5cca: OUTPUT« 0␤»
TimToady heh
masak: ^^ here's a bug for you, or maybe two or three 16:23
perl6: say (^2**32).pick.fmt('%32b') 16:25
p6eval niecza v13-389-g852f0ff: OUTPUT«(timeout)» 16:26
..pugs b927740: OUTPUT«pugs: out of memory (requested 1048576 bytes)␤»
..rakudo ce5cca: OUTPUT«11110010000111100110011111110100␤»
TimToady nom: say (^2**64).pick.fmt('%64b')
p6eval nom ce5cca: OUTPUT«1010100001010011111100101101011101010001000000010000000000000000␤»
TimToady nom: say (^2**128).pick.fmt('%128b') 16:27
p6eval nom ce5cca: OUTPUT« 0␤»
TimToady pick from a large range might need to generate more entropy than a single standard rand call provides; note the trailing 0's above
colomon oooo, right 16:28
moritz_ aye
good catch, TimToady++
nom: say (^2**64).pick.fmt('%64b') 16:29
p6eval nom ce5cca: OUTPUT«1000010110111011101000111001111101010001000000010000000000000000␤»
moritz_ submits rakudobug
tadzik random not random enough
TimToady cat /dev/urandom :) 16:30
benabik xkcd.com/221/
masak oh hai, #perl6 16:32
moritz_ lol it's masak, 3 minutes after I've submitted a rakudobug :-)
masak :) 16:33
TimToady well, %256b is another
masak I could smell it all the way across the Interwebs...
16:33 kaleem left
tadzik oh hai masak 16:33
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TimToady nom: say uint32(-1234) 16:35
p6eval nom ce5cca: OUTPUT«===SORRY!===␤CHECK FAILED:␤Undefined routine '&uint32' called (line 1)␤»
TimToady aww
moritz_ we don't have no unsigned or sized types yet 16:36
TimToady how hard can it be? :) 16:37
moritz_ O(ugly)
TimToady U(n log n)
moritz_ at least if you want to be able to stuff with it, and not just store it :-) 16:38
masak moritz_: oh, you're back to having an underscore? :/ 16:39
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moritz me? 16:39
masak :) 16:40
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TimToady an implementation is allowed to use larger temporary values and just treat a sized native as a storage type 16:40
though obviously uint32() filters it through such a storage location notionally
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TimToady and we probably need pragmatic controls of temporary values to get C-like speeds, since converting to and from Int is likely to be slowish 16:47
we also have to think about how much leeway we give the default behavior, since it can lead to non-portability if some implementations store temps in natives and some don't 16:48
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TimToady niecza: "abc" ~~ /()/ 16:57
p6eval niecza v13-389-g852f0ff: OUTPUT«===SORRY!===␤␤Null pattern not allowed at /tmp/RT0yNE_wqG line 1:␤------> "abc" ~~ /(⏏)/␤␤Parse failed␤␤»
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TimToady niecza: say "1ab2ab3c" ~~ /^ \d ** abc $/ ?? "OH NOES" !! "oh phew" 17:06
p6eval niecza v13-389-g852f0ff: OUTPUT«Potential difficulties:␤ Unsupported use of atom ** a as separator; nowadays please use atom+ % a at /tmp/fafMgnVUwW line 1:␤------> say "1ab2ab3c" ~~ /^ \d ** a⏏bc $/ ?? "OH NOES" !! "oh phew"␤␤oh phew␤»
TimToady oh, already in the backlog, sorry 17:07
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TimToady if we're going to compare timings, I'd rather have the startup costs separate from the timings after that 17:10
I'm more interested in how fast it runs once it gets going
masak +1 17:11
PerlJam
.oO( It may take a year to get going, but once it's running, it's blazing fast )
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TimToady well, if it runs in -400 days, you have a winner :) 17:12
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masak .oO( time-traveling runtime ) 17:13
PerlJam starts building his computer based on time traveling neutrinos
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masak PerlJam: answer shows up fraction of a second before you hit Enter. :) 17:16
tadzik have you see TheDamian's talk about time-traveling programs? 17:17
brian___ hi, may I ask why most of the source files under rakudo-star-2012.01/rakudo-2012.01 are just Perl6 pm files? 17:18
tadzik because Rakudo is mostly written in Perl 6 :)
brian___ so amazing... can you help simply explain that/
tadzik you mean, how's it possible than the Perl 6 compiler is written in Perl 6? 17:19
brian___ yes
tadzik I'm not too good at explaining that, tbh :)
en.wikipedia.org/wiki/Bootstrapping_(compilers) may help 17:20
TimToady well, you have to write it in *something*, and we like to write Perl 6
as for bootstrapping, it just means that the first time, we couldn't write it in Perl 6, till we could 17:21
masak brian___: maybe the tricky bit to understand about it is that you have to build things up in a certain order, from simply to complex, to get a system to bootstrap.
but there's really not much more to it than that.
simple* 17:22
PerlJam brian___: or ... you can just continue to think of it as magic in order to maintain a sense of wonder :)
masak tadzik: I have seen it. it's breathtaking.
TimToady the other important bit is to design the language such that it will be efficient (enough, fsdo) to write a compiler in
masak PerlJam: sir, I have confiscated your geek card until you see sense. 17:23
tadzik I have a feeling that Damian could've been talking about zebras, chopping wood and eating oranges and it'd still be interesting as hell, if you know what I mean :)
PerlJam I see it!! It's right there at the end of your sentence
brian___ okay...thanks, sounds wonderful
masak PerlJam: :P
TimToady it *is* wonderful, except when it isn't :)
we say "Have the appropriate amount of fun!" because sometimes the appropriate amount is negative :) 17:24
masak tadzik: now there's my next talk request for TheDamian: "Zebras, chopping wood, and eating oranges".
PerlJam tadzik: the trick for us mortals is recognizing when Damian is being a genius and when he's just being insane.
TimToady HTAAOF has a certain jauntiness to it 17:25
PerlJam tadzik: that's especially hard when those two states overlap
masak tadzik: jnthn's sitting next to me. he says "it sounds more like a tadzik talk, since it's got zebry in it" :P
tadzik :P
masak tadzik: "it's not a completely black-and-white thing, though"
tadzik jnthn at his best
masak dang, even when he's offline he's making awful puns! :P
":D" 17:26
TimToady brian___: run away! you're in danger!
masak *lol*
tadzik masak: I'm now tempted to stick zebra images in my next talk, as subliminal messages or such
PerlJam masak: the talk might be more interesting with out the commas 17:27
masak PerlJam: :D
TimToady perl6: say perl True;
p6eval niecza v13-389-g852f0ff: OUTPUT«===SORRY!===␤␤Undeclared routine:␤ 'perl' used at line 1␤␤Unhandled exception: Check failed␤␤ at /home/p6eval/niecza/boot/lib/CORE.setting line 1347 (die @ 3) ␤ at /home/p6eval/niecza/src/STD.pm6 line 1147 (P6.comp_unit @ 33) ␤ at /ho…
..pugs b927740: OUTPUT«Bool::True␤»
..rakudo ce5cca: OUTPUT«===SORRY!===␤CHECK FAILED:␤Undefined routine '&perl' called (line 1)␤»
TimToady aww
pugs++
though perhaps it's just an old failover 17:28
tadzik pugs: say perl 6
p6eval pugs b927740: OUTPUT«6␤»
TimToady pugs: say perl 6, <The Movie>; 17:29
p6eval pugs b927740: OUTPUT«6TheMovie␤»
masak nom: class Zebra { method chop-wood { say "{self} chip chop" }; method eat-oranges { say "{self} om nom" } }; for map { Zebra.new }, ^5 { Bool.roll ?? .chop-wood !! .eat-oranges } 17:30
p6eval nom ce5cca: OUTPUT«Zebra<2156237269854934840> om nom␤Zebra<2156237269854969130> chip chop␤Zebra<2156237269865416254> om nom␤Zebra<2156237269865430586> om nom␤Zebra<2156237269865451573> chip chop␤»
masak :D
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tadzik lovely :) 17:31
[Coke] needs to figure out a way how it makes sense for Damian to give a presentation to the bunch of accountants and lawyers (and IT people who don't use perl) that I work with.
cognominal_ coke, you should figure that in constant time 17:32
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TimToady perl6: class A { has $!x; method new($x) { my $s = self.bless(*); $s!x = $x; }; method emit { say $!x } }; say A.new(42).emit 17:34
p6eval rakudo ce5cca: OUTPUT«Private method 'x' not found on type A␤ in method dispatch:<!> at src/gen/CORE.setting:783␤ in method new at /tmp/vZaSEx0rTL:1␤ in block <anon> at /tmp/vZaSEx0rTL:1␤ in <anon> at /tmp/vZaSEx0rTL:1␤»
..niecza v13-389-g852f0ff: OUTPUT«Unhandled exception: Unable to resolve method emit in class Int␤ at /tmp/N_zbHgx3bm line 1 (mainline @ 4) ␤ at /home/p6eval/niecza/lib/CORE.setting line 3606 (ANON @ 3) ␤ at /home/p6eval/niecza/lib/CORE.setting line 3607 (module-CORE @ 62) ␤ at /home/…
..pugs b927740: OUTPUT«*** No such method in class A: "&bless"␤ at /tmp/lKqkdd8bc_ line 1, column 40-58␤»
TimToady that maybe oughta work
a class is supposed to trust itself
perl6: class A { has $!x; method new($x) { self := self.bless(*); $!x = $x; }; method emit { say $!x } }; say A.new(42).emit 17:36
p6eval rakudo ce5cca: OUTPUT«===SORRY!===␤Cannot use bind operator with this left-hand side␤at /tmp/O52Jx80HaS:1␤»
..niecza v13-389-g852f0ff: OUTPUT«Unhandled exception: Unable to resolve method emit in class Int␤ at /tmp/9fZJmJZirV line 1 (mainline @ 4) ␤ at /home/p6eval/niecza/lib/CORE.setting line 3606 (ANON @ 3) ␤ at /home/p6eval/niecza/lib/CORE.setting line 3607 (module-CORE @ 62) ␤ at /home/…
..pugs b927740: OUTPUT«*** No such method in class A: "&bless"␤ at /tmp/bUqVPV4PNq line 1, column 37-58␤»
TimToady perl6: class A { has $!x; method new($ is copy: $x) { self := self.bless(*); $!x = $x; }; method emit { say $!x } }; say A.new(42).emit 17:37
p6eval rakudo ce5cca: OUTPUT«===SORRY!===␤Cannot use bind operator with this left-hand side␤at /tmp/tDCsYeQXIU:1␤»
..niecza v13-389-g852f0ff: OUTPUT«Unhandled exception: Unable to resolve method emit in class Int␤ at /tmp/YcAYnAhuld line 1 (mainline @ 4) ␤ at /home/p6eval/niecza/lib/CORE.setting line 3606 (ANON @ 3) ␤ at /home/p6eval/niecza/lib/CORE.setting line 3607 (module-CORE @ 62) ␤ at /home/…
..pugs b927740: OUTPUT«*** ␤ Unexpected "$ is"␤ expecting formal parameter or ")"␤ at /tmp/evtmtApqAA line 1, column 31␤»
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TimToady it would be interesting to allow new to turn itself into a method halfway through 17:37
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TimToady *instance metohd 17:39
*ho
in any case, private attrs can be initialized with a real method too 17:41
perl6: class A { has $!x; method new($x) { my $s = self.bless(*); $s.init($x); $s; }; method init($x) { $!x = $x }; method emit { say $!x } }; say A.new(42).emit 17:43
p6eval rakudo ce5cca, niecza v13-389-g852f0ff: OUTPUT«42␤True␤»
..pugs b927740: OUTPUT«*** No such method in class A: "&bless"␤ at /tmp/A9BceJ3LJ5 line 1, column 40-58␤»
TimToady perl6: class A { has $!x; method new($x) { my $s = self.bless(*); $s!x = $x; $s; }; method emit { say $!x } }; say A.new(42).emit
p6eval pugs b927740: OUTPUT«*** No such method in class A: "&bless"␤ at /tmp/hf9sOvg374 line 1, column 40-58␤»
..rakudo ce5cca: OUTPUT«Private method 'x' not found on type A␤ in method dispatch:<!> at src/gen/CORE.setting:783␤ in method new at /tmp/ZmgID2PgKO:1␤ in block <anon> at /tmp/ZmgID2PgKO:1␤ in <anon> at /tmp/ZmgID2PgKO:1␤»
..niecza v13-389-g852f0ff: OUTPUT«42␤True␤»
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TimToady niecza++ # helps to return the new object from new... 17:49
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sorear good * #perl6 17:54
colomon \o 17:56
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[Coke] o/ 17:59
masak sorear! \o/
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sorear o/ masak 18:06
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tadzik hm, niecza now fully supports MAIN? 18:11
sorear No, but it's as good as nom at MAIN 18:12
tadzik I see
sorear I ported the (incomplete) nom implementation
there are a number of spectests that had to be fudged
tadzik I ask for the features matrix shows MAIN as better in niecza than in nom
sorear I think the features matrix is wrong for nom, 18:13
nom: multi MAIN("foo") { }; multi MAIN("bar", $quux) { }; @*ARGS = '--help'
p6eval nom ce5cca: OUTPUT«Usage:␤ --setting=SAFE foo␤ --setting=SAFE bar <quux>␤»
tadzik hmm, phasers in 15? 18:14
sorear phasers in -45 18:15
it's 1815 UTC now
tadzik so everyone forgot?
duh
PerlJam apparently
might be time to renegotiate the #phasers time 18:16
tadzik heh, just in time when wed started to suit me again :)
colomon whoops.
complete fail to have #phasers, eh?
masak o.O
PerlJam too many time-traveling zebra neutrinos 18:17
masak .oO( everyone had an inappropriate amount of fun ) 18:20
tadzik heh, fsvo fun
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pmichaud current phasers time hasn't been convenient for me the past few weeks 18:54
sorear leaves 18:55
[Coke] ~~ 18:56
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[Coke] .u shark 20:59
phenny [Coke]: Sorry, no results for 'shark'.
[Coke] .u jump 21:00
phenny [Coke]: Sorry, no results for 'jump'.
21:00 am0c left
moritz niecza: .say for dir 21:02
p6eval niecza v13-389-g852f0ff: OUTPUT«Unhandled exception: dir may not be used in safe mode␤ at /home/p6eval/niecza/lib/CORE.setting line 0 (dir @ 0) ␤ at /tmp/pseTHfvDz8 line 1 (mainline @ 2) ␤ at /home/p6eval/niecza/lib/CORE.setting line 3606 (ANON @ 3) ␤ at /home/p6eval/niecza/lib/CORE…
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bbkr1 is there a way to make variable static within method? 21:08
moritz static? as in 'state'? 21:10
bbkr1 rakudo: sub foo { state $x; say $x++; }; foo(); foo() 21:11
p6eval rakudo ce5cca: OUTPUT«0␤1␤»
bbkr1 exactly!
thanks
jnthn home :) 21:12
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jnthn ...and pretty tired. But tomorrow is pretty much free for Rakudo stuff :) 21:13
tadzik \o/
jnthn (5 hour trip to Stockholm, evening out, slide hacking, little sleep, giving three talks, five hour train journey home :)) 21:14
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[Coke] jnthn++ 21:26
anyone here going to YAPC::NA this year?
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[Coke] be nice to have at least one sixperl talk. 21:27
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Tene [Coke]: I'd love to go; I've planned to go the past few years, but life gets in the way. 21:46
Hopeful to avoid that this year.
colomon I'm tentatively planning on going to YAPC::NA
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[Coke] I need to see if my boss will spring for it. 23:07
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