»ö« | perl6.org/ | nopaste: paste.lisp.org/new/perl6 | evalbot usage: 'perl6: say 3;' or rakudo: / pugs: / std: , or /msg p6eval perl6: ... | irclog: irc.pugscode.org/ | UTF-8 is our friend!
Set by wolfe.freenode.net on 30 October 2009.
00:00 colomon joined
zaslon lolperl6adventhazblogged! perl6advent++ 'Day 13: Junctions': perl6advent.wordpress.com/2009/12/1...junctions/ 00:06
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colomon \o/ 00:19
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carlin should probably set up a cron that does a killall perl6 and restarts the bots every so many hours ... 00:27
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colomon rakudo: say (2.1 ... { * + 1.4 / 21 }, 3.5).perl 03:16
p6eval rakudo 7ef386: Multiple Dispatch: No suitable candidate found for 'cmp', with signature 'PP->I'␤in Main (file <unknown>, line <unknown>)␤
colomon rakudo: say (2.1, 2.2, 2.3 ... 3.5).perl 03:17
p6eval rakudo 7ef386: Multiple Dispatch: No suitable candidate found for 'cmp', with signature 'PP->I'␤in Main (file <unknown>, line <unknown>)␤
colomon rakudo: say ('a', 'b', 'c' ... 'z').perl 03:24
p6eval rakudo 7ef386: Multiple Dispatch: No suitable candidate found for 'cmp', with signature 'PP->I'␤in Main (file <unknown>, line <unknown>)␤
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diakopter std: .......() 03:32
p6eval std 29337: ok 00:01 104m␤
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diakopter std: ...,...,.() 03:33
p6eval std 29337: ok 00:01 105m␤
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diakopter std: \ $/|()|1 03:35
p6eval std 29337: ok 00:01 106m␤
diakopter std: $/ 03:36
p6eval std 29337: ok 00:01 105m␤
diakopter rakudo: say $/.WHAT 03:37
p6eval rakudo 7ef386: Failure()␤
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diakopter std: 00 03:47
p6eval std 29337: Potential difficulties:␤ Leading 0 does not indicate octal in Perl 6 at /tmp/Rh74TRcYVI line 1:␤------> 00⏏<EOL>␤ok 00:01 104m␤ 03:48
diakopter std: 0_0
p6eval std 29337: ok 00:01 104m␤
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diakopter std: O_O 03:48
p6eval std 29337: Undeclared name:␤ 'O_O' used at line 1␤ok 00:01 104m␤
diakopter std: o_O
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p6eval std 29337: Undeclared routine:␤ 'o_O' used at line 1␤ok 00:02 104m␤ 03:48
diakopter Undeclared name vs Undeclared routine? 03:49
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diakopter rakudo: say "{"~"}" # :) 03:57
p6eval rakudo 7ef386: ~␤
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carlin std: foobar 04:31
p6eval std 29337: Undeclared routine:␤ 'foobar' used at line 1␤ok 00:01 104m␤ 04:32
carlin std: FOOBAR
p6eval std 29337: Undeclared name:␤ 'FOOBAR' used at line 1␤ok 00:01 104m␤
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carlin std: sub FOOBAR {}; FOOBAR 04:33
p6eval std 29337: ok 00:03 104m␤
JimmyZ ng: gather { take }
p6eval ng 0307c2: too few positional arguments: 0 passed, 1 (or more) expected␤current instr.: '&take' pc 14108 (src/builtins/Junction.pir:299)␤
JimmyZ ng: take
p6eval ng 0307c2: too few positional arguments: 0 passed, 1 (or more) expected␤current instr.: '&take' pc 14108 (src/builtins/Junction.pir:299)␤
JimmyZ ng: take()
p6eval ng 0307c2: too few positional arguments: 0 passed, 1 (or more) expected␤current instr.: '&take' pc 14108 (src/builtins/Junction.pir:299)␤
JimmyZ ng: gather
p6eval ng 0307c2: Could not find non-existent sub &gather␤current instr.: '_block14' pc 29 (EVAL_1:0)␤
JimmyZ &take 04:34
ng: &take
p6eval ng 0307c2: Symbol '&take' not predeclared in <anonymous>␤current instr.: 'perl6;PCT;HLLCompiler;panic' pc 137 (src/PCT/HLLCompiler.pir:101)␤
JimmyZ ng: take $_
p6eval ng 0307c2: take without gather␤
TimToady carlin: as the comment in STD.pm says: # just a guess, but good enough to improve error reporting 04:35
std: gather { take }
p6eval std 29337: ok 00:01 104m␤
TimToady probably worth leaving in, since it does return a Nil 04:36
and that may be all you need to return
JimmyZ ng: gather { take }
p6eval ng 0307c2: too few positional arguments: 0 passed, 1 (or more) expected␤current instr.: '&take' pc 14108 (src/builtins/Junction.pir:299)␤
JimmyZ ng: gather { take $_}
p6eval ng 0307c2: ( no output )
JimmyZ sometime I want take $_ by defalut :) 04:37
TimToady nothing ever takes $_ by default in Perl 6
except maybe /foo/
and a few things that set $_ by default 04:38
JimmyZ ng: $_ =2; print
p6eval ng 0307c2: ( no output )
TimToady ng: say gather { .take }
p6eval ng 0307c2: Method 'take' not found for invocant of class ''␤current instr.: '_block22' pc 101 (EVAL_1:46)␤
TimToady std: $_ =2; print
p6eval std 29337: Potential difficulties:␤ Unsupported use of bare 'print'; in Perl 6 please use .print if you want to print $_, or use an explicit argument at /tmp/bKxU3IAOOn line 1:␤------> $_ =2; print⏏<EOL>␤ok 00:01 106m␤
carlin TimToady: ah, I didn't look at the source that was just a guess on what was happening from diakopter's example 04:39
JimmyZ oh, $_ is not used by default as well as perl5?
TimToady never for function calls
JimmyZ what does $_ do? 04:40
TimToady default for given/when or for/when
JimmyZ any other?
any others?
TimToady any .foo means $_.foo
but the . is required 04:41
we are trying to get rid of all the lists that people have to memorize
you no longer have to remember which functions default to $_
just like you don't have to remember which blocks need ; at the end of a line 04:42
JimmyZ oh, the best of syntax in perl5 is not in perl6 now...
ng: $_ = take 04:43
p6eval ng 0307c2: too few positional arguments: 0 passed, 1 (or more) expected␤current instr.: '&take' pc 14108 (src/builtins/Junction.pir:299)␤
TimToady ng apparently requires an argument on take 04:44
JimmyZ ng: sub foo {}; $_ = foo; $_()
p6eval ng 0307c2: Null PMC access in can()␤current instr.: 'perl6;Mu;!STORE' pc 2047 (src/builtins/Mu.pir:387)␤
JimmyZ ng: sub foo {}; $_ = foo;
p6eval ng 0307c2: Null PMC access in can()␤current instr.: 'perl6;Mu;!STORE' pc 2047 (src/builtins/Mu.pir:387)␤
JimmyZ rakudo: sub foo {}; $_ = foo;
p6eval rakudo 7ef386: ( no output )
JimmyZ rakudo: sub foo {}; $_ = foo();
p6eval rakudo 7ef386: ( no output )
TimToady missing a & on &foo 04:45
JimmyZ rakudo: $_ = take
p6eval rakudo 7ef386: too few positional arguments: 0 passed, 1 (or more) expected␤in Main (file <unknown>, line <unknown>)␤
TimToady ng: sub foo {}; $_ = &foo; $_();
p6eval ng 0307c2: sh: ./perl6: No such file or directory␤
TimToady recompiling...
JimmyZ rankudo: sub foo { say 'bar2000' }; $_ = foo; $_(); 04:46
rakudo: sub foo { say 'bar2000' }; $_ = foo; $_();
p6eval rakudo 7ef386: bar2000␤invoke() not implemented in class 'Boolean'␤in Main (file <unknown>, line <unknown>)␤
TimToady & !!!!
JimmyZ TimToady: I see
TimToady rakudo: sub foo { say 'bar2000' }; $_ = &foo; $_()
JimmyZ rakudo: sub foo { -> {say 'bar2000'}; }; $_ = foo; $_();
p6eval rakudo 7ef386: bar2000␤
JimmyZ rakudo: sub foo { -> {say $_ ~ 'bar2000'}; }; $_ = foo; $_('foo'); 04:47
p6eval rakudo 7ef386: Too many positional parameters passed; got 1 but expected 0␤in Main (file src/gen_setting.pm, line 324)␤
JimmyZ rakudo: sub foo { $_ -> {say $_ ~ 'bar2000'}; }; $_ = foo; $_('foo');
p6eval rakudo 7ef386: Confused at line 2, near "-> {say $_"␤in Main (file <unknown>, line <unknown>)␤
JimmyZ rakudo: sub foo { -> {say 'bar2000'}; }; $_ = foo; $_(); 04:48
p6eval rakudo 7ef386: bar2000␤
JimmyZ rakudo: sub foo { return $_ -> {say $_ ~ 'bar2000'}; }; $_ = foo; $_('foo');
p6eval rakudo 7ef386: Confused at line 2, near "-> {say $_"␤in Main (file <unknown>, line <unknown>)␤
TimToady -> is a term, so can't follow $_ 04:49
JimmyZ rakudo: sub foo { return $a -> {say $^b ~ 'bar2000'}; }; $d_ = foo; $_('foo');
p6eval rakudo 7ef386: Confused at line 2, near "-> {say $^"␤in Main (file <unknown>, line <unknown>)␤
TimToady can't follow $a either
std: sub foo { return $a -> {say $^b ~ 'bar2000'}; }; $d_ = foo; $_('foo');
p6eval std 29337: ===SORRY!===␤Unexpected block in infix position (two terms in a row, or previous statement missing semicolon?) at /tmp/nwmDUFtiMF line 1:␤------> sub foo { return $a ⏏-> {say $^b ~ 'bar2000'}; }; $d_ = foo; ␤ expecting any of:␤ bracketed infix␤ 04:50
..infi…
diakopter maybe /foo/ needs to be ./foo/ for more consistency
TimToady nah, it's not like the list of / characters is very long :)
JimmyZ I forgot how to pass args.
TimToady std: sub foo { return $a -> {say $^b ~ 'bar2000'}; }; $d_ = foo; $_('foo'); 04:51
p6eval std 29337: ===SORRY!===␤Unexpected block in infix position (two terms in a row, or previous statement missing semicolon?) at /tmp/KKGtWBGkvd line 1:␤------> sub foo { return $a ⏏-> {say $^b ~ 'bar2000'}; }; $d_ = foo; ␤ expecting any of:␤ bracketed infix␤
..infi…
TimToady std: sub foo { return -> {say $^b ~ 'bar2000'}; }; $d_ = foo; $_('foo');
p6eval std 29337: ===SORRY!===␤Placeholder variable $^b cannot override existing signature ( ) at /tmp/ud5JwbQtcj line 1:␤------> sub foo { return -> {say $^b⏏ ~ 'bar2000'}; }; $d_ = foo; $_('foo');␤ expecting any of:␤ POST␤ postfix␤
..postfix_prefix_meta_operator␤ sta…
TimToady std: sub foo { return {say $^b ~ 'bar2000'}($^a); }; $d_ = foo; $_('foo');
p6eval std 29337: Potential difficulties:␤ Variable $d_ is not predeclared at /tmp/4JEXHH1iJH line 1:␤------> eturn {say $^b ~ 'bar2000'}($^a); }; $d_⏏ = foo; $_('foo');␤ok 00:01 108m␤
TimToady std: sub foo { return {say $^b ~ 'bar2000'}($^a); }; $_ = foo; $_('foo');
p6eval std 29337: ok 00:01 106m␤ 04:52
diakopter std: sub foo { return -> sub {say $^b ~ 'bar2000'}; }; $d_ = foo; $_('foo');
p6eval std 29337: ===SORRY!===␤Invalid typename sub at /tmp/xxwGrhZ5NU line 1:␤------> sub foo { return -> sub⏏ {say $^b ~ 'bar2000'}; }; $d_ = foo; $_␤FAILED 00:01 107m␤
TimToady rakudo: sub foo { return {say $^b ~ 'bar2000'}($^a); }; $_ = foo; $_('foo');
p6eval rakudo 7ef386: Not enough positional parameters passed; got 0 but expected 1␤in Main (file src/gen_setting.pm, line 324)␤
TimToady rakudo: sub foo ($a) { return {say $^b ~ 'bar2000'}($a); }; $_ = foo; $_('foo');
p6eval rakudo 7ef386: Not enough positional parameters passed; got 0 but expected 1␤in Main (file src/gen_setting.pm, line 324)␤
diakopter rakudo: sub foo { return {say $^b ~ 'bar2000'}($^a); }; $_ = foo(&foo); $_('foo');
JimmyZ rakudo: sub foo { return -> $_ {say $^b ~ 'bar2000'}; }; $d_ = foo; $_('foo');
p6eval rakudo 7ef386: foobar2000␤invoke() not implemented in class 'Boolean'␤in Main (file <unknown>, line <unknown>)␤
rakudo 7ef386: Cannot use placeholder var in block with signature. at line 2, near " ~ 'bar200"␤in Main (file src/gen_setting.pm, line 2127)␤
JimmyZ rakudo: sub foo { return -> $_ {say $_ ~ 'bar2000'}; }; $d_ = foo; $_('foo'); 04:53
p6eval rakudo 7ef386: Symbol '$d_' not predeclared in <anonymous> (/tmp/GZTWkqXiKX:2)␤in Main (file <unknown>, line <unknown>)␤
TimToady rakudo: sub foo ($a) { return -> $b {say $b ~ 'bar2000'}($a); }; $_ = foo; $_('foo');
p6eval rakudo 7ef386: Not enough positional parameters passed; got 0 but expected 1␤in Main (file src/gen_setting.pm, line 324)␤
JimmyZ rakudo: sub foo { -> $_ {say $_ ~ 'bar2000'}; }; $_ = foo; $_('foo');
p6eval rakudo 7ef386: foobar2000␤
diakopter TimToady: it wants an arg on foo;
TimToady rakudo: sub foo { return -> $b {say $b ~ 'bar2000'} }; $_ = foo; $_('foo');
p6eval rakudo 7ef386: foobar2000␤
JimmyZ rakudo: sub foo { -> $_ {say $^_ ~ 'bar2000'}; }; $_ = foo; $_('foo'); 04:54
p6eval rakudo 7ef386: Cannot use placeholder var in block with signature. at line 2, near " ~ 'bar200"␤in Main (file src/gen_setting.pm, line 2127)␤
TimToady rakudo: sub foo ($b) {say $b ~ 'bar2000'}; $_ = &foo; $_('foo');
p6eval rakudo 7ef386: foobar2000␤
diakopter oh, I see what you were doing
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JimmyZ how use $^ in a block? I forgot again 04:54
TimToady use it instead of a signature 04:55
any -> counts as a signature, even if empty
rakudo: $_ = {say $^b ~ 'bar2000'}; $_('foo');
p6eval rakudo 7ef386: foobar2000␤
JimmyZ rakudo: $_ = {say $^b ~ $^c x 2 ~ 'bar2000'}; $_('f', 'o'); 04:57
p6eval rakudo 7ef386: foobar2000␤
JimmyZ rakudo: $_ = {say $^b ~ $^c x 10 ~ 'bar2000'}; $_('f', 'o');
p6eval rakudo 7ef386: foooooooooobar2000␤
JimmyZ rakudo: $_ = {say $^b ~ $^c x 10 ~ $^b ~ 'bar2000'}; $_('f', 'o'); 04:58
p6eval rakudo 7ef386: foooooooooofbar2000␤
TimToady akudo: $_ = {say $^b ~ $^c x 10 ~ $^b ~ 'bar2000'}; .('f', 'o')
diakopter rakudo: sub foo {say $^b ~ 'bar2000'}; foo(&foo); # TimToady :) 04:59
TimToady rakudo: $_ = {say $^b ~ $^c x 10 ~ $^b ~ 'bar2000'}; .('f', 'o')
p6eval rakudo 7ef386: foobar2000␤
rakudo 7ef386: foooooooooofbar2000␤
TimToady rakudo: say blech {}; say &blech 05:00
p6eval rakudo 7ef386: ( no output )
TimToady rakudo: sub blech {}; say &blech
p6eval rakudo 7ef386: blech␤
diakopter :)
wait, what happened in the 'say blech {}
JimmyZ rakudo: sub foo {say $^b ~ 'bar2000'}; foo(&foo); 05:01
p6eval rakudo 7ef386: foobar2000␤
JimmyZ rakudo: sub foooo {say $^b ~ 'bar2000'}; foooo(&foooo);
p6eval rakudo 7ef386: foooobar2000␤
diakopter rakudo: sub foo { }; foo(:&foo) 05:02
p6eval rakudo 7ef386: Symbol '&foo' not predeclared in <anonymous>␤in Main (file <unknown>, line <unknown>)␤
JimmyZ rakudo: sub foooo {say $^b}; foooo(&foooo);
p6eval rakudo 7ef386: foooo␤
JimmyZ what's happend?
ng: sub foooo {say $^b}; foooo(&foooo);
p6eval ng 0307c2: &foooo␤
JimmyZ bug? 05:03
rakudo: sub foo {}; $_ = &foo; .say; 05:04
p6eval rakudo 7ef386: foo␤
JimmyZ ng: sub foo {}; $_ = &foo; .say;
p6eval ng 0307c2: &foo␤
JimmyZ pugs: sub foo {}; $_ = &foo; .say;
p6eval pugs: <SubRoutine(&foo)>␤
TimToady pugs++ 05:05
JimmyZ ng: sub foo {}; $_ = &foo; .WHAT.say;
p6eval ng 0307c2: Sub()␤
JimmyZ pugs: sub foo {}; $_ = &foo; .WHAT.say; 05:06
p6eval pugs: Sub␤
JimmyZ rakudo: sub foo {}; $_ = &foo; .WHAT.say;
p6eval rakudo 7ef386: Sub()␤
diakopter is it bad that I've been pronouncing github as gith-ub (in my mind)? 05:07
TimToady depends on how plastic your brain is 05:08
diakopter std: our @$$$$$$$$$$$$$$$$$$$$$$ # I still don't understand what this means 05:09
p6eval std 29337: ok 00:01 106m␤
TimToady same as: 05:12
std: our @$
p6eval std 29337: ok 00:01 105m␤
TimToady which is equiv to our Positional $ 05:13
which would be an anonymous variable that is guaranteed to hold a Positional :)
Alias TimToady: use.perl.org/~Alias/journal/40015
Managed to finally solve recursion without using regex recursion 05:14
carlin to solve recursion you must first solve recursion
TimToady you can say that again 05:15
diakopter I can say this again 05:16
Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Alias: Ali 05:18
Alias (oh where's /kickban when you need it)
05:19 ChanServ sets mode: +o Alias
Alias Well, it's too late NOW isn't it :) 05:19
05:19 Alias sets mode: -o Alias
TimToady I dunno, considering it's diakopter that's the ChanServ, seems like it would suspend the statute of limitations 05:20
diakopter Alias: direct recursion or indirect/mutual also?
Alias diakopter, hrm?
I just make things, I don't know all these fancy terminalologies 05:21
This ignorance is my greatest asset sometimes, it seems :)
diakopter studies terminals
TimToady prefers dragons and winds 05:22
diakopter Alias: what kind of input (and patterns) would you now be able to support
(what's a minimualistic example of a recursion you can now support) 05:23
Alias I've currently got arbitrary depth foo.bar.baz expressions on ARRAY/HASH/Object (but not VMethods), IF/ELSE/UNLESS and FOREACH
Plus whitespace chomping [%-
I'm at 68k of memory 05:24
diakopter minimual: that's a new one
Alias And I've got a budget of 100k
diakopter what if foo.bar.baz is a reference to foo
TimToady (you'll note he doesn't say 100k *what*)
Alias Memory cost of "use" 05:25
TimToady australian bytes are worth as much as american bytes
*aren't
Alias But we're getting close
TimToady grr, can't tell jokes anymore
Alias Parity expected some time next year :)
TimToady but then your bytes will be worth 12.5% more than ours 05:26
Alias TimToady, s/jokes/original jokes/ :)
TimToady assuming only one parity bit
diakopter ECC costs a bit more
Alias: can you provide an example of what kind of recursion you're enabling? 05:29
Alias [% IF foo %][% FOREACH item IN list %][% IF item.cool %]Awesome![% ELSE %][% FOREACH .... and so on
It's interesting only really because I'm NOT doing brace-flipping and compiling it into code 05:30
I'm trying to do it entirely inside normal regex/code
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carlin rakudo: say '01'..20 06:17
p6eval rakudo 7ef386: 0102030405060708091011121314151617181920␤
carlin rakudo: say '01'..8
p6eval rakudo 7ef386: 01020304050607080910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879␤
carlin ng: say '01'..8 06:23
p6eval ng 0307c2: "01"..8␤
carlin ng: say '01'..20 06:24
p6eval ng 0307c2: "01"..20␤
carlin ng: say '01'..'20'
p6eval ng 0307c2: "01".."20"␤
carlin ng: say 1..8
p6eval ng 0307c2: 1..8␤
carlin oh
ng: say 1..'foobarbaz' 06:25
p6eval ng 0307c2: 1.."foobarbaz"␤
carlin heh
mberends is that a Range, and ng being properly lazy? 06:33
ng: say (1.."foobarbaz").WHAT # seems to be that way 06:35
p6eval ng 0307c2: Range()␤
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carlin ng: for 1..8 { .say } 06:37
p6eval ng 0307c2: 1..8␤
carlin ng: for 1...8 { .say }
p6eval ng 0307c2: 1␤2␤3␤4␤5␤6␤7␤8␤
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hejki ng: (1..8)>>.say 06:47
p6eval ng 0307c2: sh: ./perl6: No such file or directory␤
hejki rakudo: (1..8)>>.say
p6eval rakudo 7ef386: 1␤2␤3␤4␤5␤6␤7␤8␤
hejki btw.. how does hyper deal with lazy arrays? 06:48
TimToady hyper is intrinsically eager 07:02
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mberends TimToady: do you see any problem in adding exit status values to viv when errors/difficulties are encountered? currently the exit status seems to always be 0. 07:13
TimToady it already exits non-zero on fatal errors 07:17
mberends yes, it would be helpful to me to flag non-fatal errors too. I'm calling viv from C via popen(). 07:18
pclose() returns the status
TimToady seems reasonable 07:19
mberends let me try to patch viv then without breaking anything (gradually) 07:20
TimToady I doubt patching viv will work 07:21
mberends hmm, true, looked at the code already 07:24
TiMBuS hey, whats the best way to split a string in two in perl6? you cant slice a string can you 07:25
TimToady by what criterion? 07:26
TiMBuS x amount of characters
uh, x amount of bytes
TimToady strings don't come in bytes in Perl 6 :)
though buffers do... 07:27
and in theory buffers are sliceable, since they're arrays too
but I don't think rakudo does much with buffers yet 07:28
TiMBuS oh.
:[
TimToady or you can say /(. ** 10)(. ** 20)/ 07:29
TiMBuS yeah but x can change
and i don't think ** works with scalars 07:30
TimToady ng will soon support closures, so /(. ** {$x})/ would work then
ng: my $x = 3; say "food" ~~ /(. ** {$x})/ 07:31
p6eval ng 0307c2: food␤
TimToady probably took it as a separator instead of a count
ng: my $x = 3; say "food" ~~ /(. ** {$x..$x})/
p6eval ng 0307c2: food␤
TimToady ah well, bug 07:32
there's always substr
TiMBuS yep
TimToady or eval
TiMBuS it would be nice if perl 6 had string slices
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TimToady zzz & 07:37
mberends g'nite
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JimmyZ ng: $_ = { say $^f ~ $^o x 2 ~ 'bar2000'; }; $_($o='o', $f='f'); 07:46
p6eval ng 0307c2: sh: ./perl6: No such file or directory␤
JimmyZ rakudo: $_ = { say $^f ~ $^o x 2 ~ 'bar2000'; }; $_($o='o', $f='f');
p6eval rakudo 7ef386: Symbol '$o' not predeclared in <anonymous> (/tmp/GC2fHIZa5v:2)␤in Main (file <unknown>, line <unknown>)␤
JimmyZ ng: $_ = { say $^f ~ $^o x 2 ~ 'bar2000'; }; $_($o='o', $f='f');
p6eval ng 0307c2: sh: ./perl6: No such file or directory␤
JimmyZ ng: $_ = { say $^f ~ $^o x 2 ~ 'bar2000'; }; $_($o='o', $f='f'); 07:47
p6eval ng 0307c2: sh: ./perl6: No such file or directory␤
mberends JimmyZ: ng may be recompiling in a cron job 07:49
JimmyZ ng: $_ = { say $^f ~ $^o x 2 ~ 'bar2000'; }; $_($o='o', $f='f');
p6eval ng 0307c2: Confused at line 1, near "$_($o='o',"␤current instr.: 'perl6;HLL;Grammar;panic' pc 519 (src/stage0/HLL-s0.pir:336)␤
JimmyZ how to pass named args? 07:50
ng: $_ = { say $^f ~ $^o x 2 ~ 'bar2000'; }; $_($^o='o', $^f='f');
p6eval ng 0307c2: Confused at line 1, near "$_($^o='o'"␤current instr.: 'perl6;HLL;Grammar;panic' pc 519 (src/stage0/HLL-s0.pir:336)␤
JimmyZ ng: $_ = { say $^f ~ $^o x 2 ~ 'bar2000'; }; $_('o', 'f');
p6eval ng 0307c2: offbar2000␤
JimmyZ ng: $_ = { say $^f ~ $^o x 2 ~ 'bar2000'; }; $_('f', 'o');
p6eval ng 0307c2: foobar2000␤ 07:51
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Su-Shee good morning :) 08:09
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hejki is there a perl6 way of saying my @ar = 1, 2, 3, 4, 5; for 1..3 -> $i { @ar[$i].say } ? 08:31
Tene rakudo: my @a = 1..5; for @a[1..3] { .say } 08:32
p6eval rakudo 7ef386: 2␤3␤4␤
hejki ahh 08:33
just what i was looking for :)
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hejki also is there a comfortable way of saying that a for loop shifts through an array n elems at a time? 08:38
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hejki rakudo: for 1..10 -> $a, $b, $c, $d, $e { say "a: $a b: $b c: $c d: $d e: $e"; } 08:46
p6eval rakudo 7ef386: a: 1 b: 2 c: 3 d: 4 e: 5␤a: 6 b: 7 c: 8 d: 9 e: 10␤
hejki mm.. wonder if i could use a presized array in -> ? 08:47
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hejki rakudo: my @ar = "foobar".comb(/./); my Str $str = ~@ar; say "str: $str is " ~ $str.WHAT; 09:11
p6eval rakudo 7ef386: str: f o o b a r is Str()␤
hejki hmm.. how-to remove whitespace? :)
carlin rakudo: my @ar = "foobar".comb(/./); my Str $str = @ar.join; say "str: $str is " ~ $str.WHAT 09:13
p6eval rakudo 7ef386: str: foobar is Str()␤
hejki :P 09:14
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hejki ty 09:14
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carlin ~ adds spaces 09:17
rakudo: my @x = <foo bar baz>; say @a; say ~@a; 09:18
p6eval rakudo 7ef386: Symbol '@a' not predeclared in <anonymous> (/tmp/Z02IYUbQ4N:2)␤in Main (file <unknown>, line <unknown>)␤
carlin rakudo: my @x = <foo bar baz>; say @x; say ~@x;
p6eval rakudo 7ef386: foobarbaz␤foo bar baz␤
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JimmyZ ng: sub foo { return {say $^f ~ $^g x 2 ~ 'bar2000'} }; $_ = foo; $_('f', 'o'); 09:38
p6eval ng 0307c2: foobar2000␤
JimmyZ ng: sub foo { return {say $^f ~ $^e x 2 ~ 'bar2000'} }; $_ = foo; $_('f', 'o');
p6eval ng 0307c2: offbar2000␤ 09:39
JimmyZ Is it a bug?
ng: sub foo { return {say $^a ~ $^b x 2 ~ 'bar2000'} }; $_ = foo; $_('f', 'o'); 09:41
p6eval ng 0307c2: foobar2000␤
JimmyZ ng: sub foo { return {say $^b ~ $^a x 2 ~ 'bar2000'} }; $_ = foo; $_('f', 'o');
p6eval ng 0307c2: offbar2000␤
JimmyZ pugs: sub foo { return {say $^b ~ $^a x 2 ~ 'bar2000'} }; $_ = foo; $_('f', 'o');
p6eval pugs: offbar2000␤
JimmyZ pugs: sub foo { return {say $^a ~ $^b x 2 ~ 'bar2000'} }; $_ = foo; $_('f', 'o');
p6eval pugs: foobar2000␤
JimmyZ oh
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moritz_ good morning 09:45
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mberends good moritz_, morning # tab fail ;-) 09:46
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colomon quiet this morning 11:25
moritz_ quiet indeed
colomon i keep thinking p6 needs a method which returns the first N elems of a lazy list (lazily) 11:26
moritz_ ( list )[^$N] 11:27
colomon more or less like that, yeah
are slices lazy? 11:28
moritz_ I think so, yes
colomon then this method might be really easy to define. :) 11:29
sjohnson hiiii
colomon method head($n = 1) { self[^$n[; } 11:30
moritz_ multi sub infix:<take>(@lhs, $number) is equiv &infix<Z>( @lhs[^$number] ) { ... }
rm 11:31
multi sub infix:<take>(@lhs, $number) is equiv &infix<Z> { @lhs[^$number] ) }
> [1, 2, 3, 4, 5] $ take 2 11:32
oh, no lambdabot :-)
colomon won't that return the indies too?
moritz_ actually it's a type error
.oO( of course )
Prelude> take 2 [1, 2, 3, 4, 5] 11:33
[1,2]
colomon why the Z? 11:34
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moritz_ you'd want it to have looser precedence than the comma 11:35
colomon oooo!
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colomon is equiv is setting precedence? 11:36
moritz_ yes
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colomon very cool 11:56
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pmurias mberends: why are you calling viv from C? 12:09
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pmurias Anonymous variable requires declarator at STD.pm line 304: 12:15
------> { @*MEMOS[$⏏¢.pos]<endstmt> ||= 1; }
what may be causing this? 12:16
moritz_ incorrect UTF-8 decoding maybe?
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moritz_ std: $¢ 12:22
p6eval std 29337: ok 00:01 107m␤
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colomon moritz_: just edited your comment on p6 Advent to say ~| for string or -- previously said "strong" or. Hope this was actually a typo and not some use of the term strong I've not seen before... 12:44
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pmurias moritz_: this was part of the problem 12:55
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pmurias moritz_: do you/evalbot have an up to date STD 12:57
mberends pmurias: I'm trying to convert viv ast output to C structs. the yaml loader for that is almost working. 13:07
pmurias mberends: what for? 13:09
mberends ah, that's a sekrit ;-)
pmurias i won't tell anyone ;) 13:10
mberends 'course, if i kill you after i tell you ;) 13:11
suffice to say that if it works, it will be -Ofun for us, and if it fails, I don't want to have wasted the #perl6 community's time 13:13
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pmurias mberends: if you don't tell us what it is we will just waste our time trying to figure it out 13:22
mberends pmurias: :-) :-)
pmurias loading the ast into parrot, using it for syntax highlight in vim or writing a interpreter like sprixel are my current guesses 13:25
mberends pmurias: good guesses. now you can stop wasting more time on it :) 13:27
pmurias mberends: which one is correct?
mberends pmurias: aw, you're too young to die, and we need your company ;) 13:28
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pmurias moritz_: did you remove by account at timtowtdi.org? 13:50
moritz_ pmurias: the server was replaced a few months ago 13:54
pmurias: I can give you a new one if you need it 13:55
afk
pmurias a new one would be nice for checking if the STD just behaves strangly on my box 13:56
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hejki can i somehow compile perl6 code into a runnable binary? :) 14:21
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hejki solving euler problems with rakudo seems to take aeons :P 14:22
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colomon hejki: Pretty sure there's no way to make a binary from a perl6 program yet. At least, not if your goal is to make it faster. 14:44
Think of it as an opportunity to work on your algorithm optimization skills for project Euler...
slavik afaik, parrat == java for dynamic languages 14:46
pmurias slavik: jvm?
slavik parrot*
pmyes
jvm would be a better term
hejki colomon: heh :P 14:47
slavik I use 'java' interchangeably :(
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slavik I think I like about jvm is ability to limit how much memory it can take up and also JMX :) 14:48
pmurias JMX?
colomon hejki: you're lucky if it's just running slow. I think every math program I've written in perl 6 in the last month has starting getting bus errors as soon as I cranked up the number of calculations to anywhere near actually being useful. 14:50
slavik pmurias: Java Management eXtensions 14:52
pmurias: you can connect to the JVM remotely and see what the heap size/usage is and such
pmurias: and if you are running a proper application server that has JDBC facilities, you can also pull data regarding database connections, like how many are active, how many used, how many connections have been made, etc. 14:53
same with JMS (Java Messaging Service)
hejki colomon: :))
wonder how long it'll take to make it actually usable :) 14:55
colomon hejki: my impression is there are just one or two bugs like this, but tracking them down is really hard. 14:56
hejki :o 14:57
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hejki would be neat to be able to: for 1..10 X $a..20 -> $a, $b { ... } to have some dependency between the loop variables :) 15:04
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moritz_ if you want that kind of control, just use two nested loops 15:25
hejki rakudo: my $str = "foobar"; say $str.reverse;' 15:26
p6eval rakudo 7ef386: Syntax error at line 2, near "'"␤in Main (file <unknown>, line <unknown>)␤
hejki zomg.. extra ' :>
rakudo: my $str = "foobar"; say $str.reverse;
p6eval rakudo 7ef386: foobar␤
hejki wot
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mberends hejki: try .flip 15:27
moritz_ rakudo: say "foobar".flip
p6eval rakudo 7ef386: raboof␤
moritz_ reverse just reverses lists
and views "foobar" as a one item list 15:28
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hejki ahh ty :> 15:34
and another one, is there something like cmpthese or timethese ? 15:36
moritz_ pointme: benchmark 15:37
pointme perlpilot's benchmark is at github.com/perlpilot/benchmark/
moritz_ hejki: as a module, yes 15:38
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slavik pmurias: JMX is neat stuff 15:49
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hejki i guess i can use bash's time for comparison :) 15:53
mberends hejki: otherwise make your own stopwatch: time() returns fractional seconds too 15:55
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moritz_ rakudo: say time(), ' ', time() 15:59
p6eval rakudo 7ef386: 1260719334.62132 1260719334.62142␤
pugs_svn r29338 | pmichaud++ | [perl6advent]: Another potential topic idea. 16:03
colomon I've found p6 programs so slow that the command line time is fine for timing them. :)
hejki: if you really wanted to do something like 1..10 X $a .. 20, you could right your own version of X which took a code block as the second argument, so you could do something like 1 .. 10 X { $^a .. 20 }. Don't think it would be too hard... 16:04
hejki :)
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moritz_ rakudo: multi sub infix:<X>(@a, Callable $b) { gather for @a -> $a { take $_ for $b($a) } }; .say for 1..4 X { $^a..5 } 16:06
p6eval rakudo 7ef386: push_pmc() not implemented in class 'Sub'␤in Main (file <unknown>, line <unknown>)␤
moritz_ that means that infix:<X> is not overloadable yet :/
colomon Oh yeah, it's in List.pir. 16:07
maybe in ng?
moritz_ I don't think ng has X yet
colomon (change ranges the serieses)
but you'd be implementing it, all ng would have to have is X in the grammar.
moritz_ it's not that easy 16:08
colomon (which it might not have, but ought to be easy to add, I think.)
moritz_ not that infix:<X> is assoc<list>
s/not/note/
so you need to retrieve an arbitrary long list of lists
and I don't think you can do that in Perl 6 signature in ng yet
need slices for that one 16:09
colomon actually, problem would be that @a would kill ng dead.
pmichaud one can always do $a
(as a workaround)
colomon errr... we're being stupid. in rakudo with a different operator name?
pmichaud: \o 16:10
moritz_ rakudo: multi sub infix:<Y>(@a, Callable $b) { gather for @a -> $a { take $_ for $b($a) } }; .say for (1..4) Y { $^a..5 }
p6eval rakudo 7ef386: 1␤2␤3␤4␤5␤2␤3␤4␤5␤3␤4␤5␤4␤5␤
colomon rakudo: multi sub infix:<Y>(@a, Callable $b) { gather for @a -> $a { take $_ for $b($a) } }; .say for 1..4 Y { $^a..5 }
p6eval rakudo 7ef386: No applicable candidates found to dispatch to for 'infix:Y'␤in Main (file <unknown>, line <unknown>)␤
colomon moritz_++
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pugs_svn r29339 | colomon++ | [perl6advent] More detail on plans. 16:17
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moritz_ colomon: do you have code for mandelbrot sets in Perl 6 already? 16:25
colomon yes
moritz_ cool
colomon wrote it last night.
moritz_ can it actually produce a decent picture without segfaulting first? :-)
colomon no
:)
41 x 41 works, 81 x 81 bus errors early on.
moritz_ what do you emit? ASCII art? or SVG? 16:26
colomon I was thinking I might try to use it as a testbed to track down the damned segfault.
PBM file.
lisppaste3 colomon pasted "mandelbrot in p6" at paste.lisp.org/display/92029 16:27
colomon It displays it rotated 90 degrees so it looks like a snowman for the holidays. 16:28
moritz_ checks out master to run it
colomon if you took out the the (' ') in the join, you could use it for 0s and 1s ascii art, I guess. :) 16:30
but anyway, it segfaults pretty darned reliably, so with any luck it can help track down the darned thing... 16:31
(Though you need to crank up $height and $width to get the segfaults.)
colomon is recompiling master with debugging turned on 16:36
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moritz_ do all odd values work as width/height? 16:41
colomon should
It needs to be odd to get the symmetry right.
Actually, I guess the height doesn't have to be odd, strictly speaking, but the code is designed for square pictures, so width should really equal height. 16:42
moritz_ I have a greyscale version that emits pmm files :-)
but segfaults for 41x41 16:43
colomon greyscale based on the number of iterations before exiting?
moritz_ yes
colomon nice.
lisppaste3 moritz_ annotated #92029 "greyscale version" at paste.lisp.org/display/92029#1 16:45
colomon it would be pretty easy to make it do color, too. I was trying to keep it straightforward.... hmmm....
moritz_ black/white is fine too 16:46
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moritz_ I just felt like playing with it :-) 16:46
colomon actually, it should be white/black, now that I think of it.
:) 16:47
Going to work up to mandel being the snowman operator.... ;)
moritz_ :-)
making the output colored is as simple as replacing .map({ $_ xx 3 }) with a function that returns RGB values for $_ 16:48
colomon yes. and I have a set of nice colors sitting around on my hard drive somewhere, from 1991 or so. :) 16:49
I should probably steal the $max_iterations thing, at least. 16:50
moritz_ put it in a github repo, that'll make it easier to play with it asynchronously 16:51
colomon I desperately wanted to use the series operator instead of subdivide, but it seems like all the operations more complicated than N1 ... N2 are broken in master (and non-existent in ng).
github, good idea, one minute.
moritz_ rakudo: say 1 ... *+4, 25 16:52
p6eval rakudo 7ef386: 15913172125␤
colomon rakudo: say 1, 2, 3 ... 25
p6eval rakudo 7ef386: Multiple Dispatch: No suitable candidate found for 'cmp', with signature 'PP->I'␤in Main (file <unknown>, line <unknown>)␤
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colomon github.com/colomon/mandelbrot 16:56
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colomon I vote we keep mandelbrot.pl black and white (well, white and black) and start up a separate script for a color version. 16:59
moritz_ doesn't see how working series operators could simplfy or replace subdivided() 17:02
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colomon back again 17:31
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moritz_ there and back again, a colomon's tale :-) 17:45
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moritz_ colomon: pushed the mandelbrot-colored.pl script 17:51
actually it's still greyscale atm
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colomon moritz_: let me poke through my old C++ source code... 18:21
> git pull 18:23
"You asked me to pull without telling me which branch you
want to merge with, and 'branch.master.merge' in
your configuration file does not tell me either. "
any ideas what that is?
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moritz_ branch "master"] remote = origin merge = refs/heads/master 18:24
oops
[branch "master"] 18:25
remote = origin
merge = refs/heads/master
colomon: add that to your .git/config file
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colomon that did it. moritz_++ 18:39
moritz_ finds that behaviour from git LTA 18:41
colomon agrees with moritz_.
will have full color in a couple of minutes here. 18:42
diakopter re: deciding yesterday whether or not to enable an interpreter mode, I think I decided that compiling every time is better; yes, the startup time of the executable will be higher than /usr/bin/perl, but... the rtcg (run time code generation) capabilities (string eval) are worth it. 18:47
arnsholt Which synopsis talks about the semantics of use?
moritz_ arnsholt: probably S11 18:49
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arnsholt Ah, right. Thanks 18:51
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colomon moritz_: I added a "+ 1" to the code and got a bus error. :( 18:55
moritz_ :(
colomon another couple of minutes, i'll be happy with the colors, and then try to look at capturing the segfault. 18:57
mberends diakopter: I think we're used to higher startup times anyway, taking it philosophically as the price to pay for a more awesome language ;) 18:59
colomon moritz_: Now in full color, but you can only get the tiniest picture to work. 19:00
moritz_ colomon: just push it nonetheless 19:02
colomon already done, I think.
moritz_ pull
ed 19:03
woot
diakopter mberends: yeah, but it will only ever get slower; this is the baseline I'm working with.
is dalek not announcing?
moritz_ not announcing what? 19:04
diakopter commits
I was curious
colomon we're working on a different repo.
diakopter I didn't see anything from it for a while
colomon people haven't been checking in very much.... 19:05
moritz_ colomon: I managed 41x41 with color
colomon \o/
can you post it somewhere, just so I can see? :)
I think I got those colors from the fractint source, circa 1991. 19:06
moritz_ moritz.faui2k3.org/tmp/color.pmm
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colomon \o/ 19:07
Now all we need to do is get it up to about 801 x 801, and then make it fast... ;)
moritz_ 71 also works 19:09
colomon oooo
that's actually kind of interesting. I'd assumed it was the raw size that was causing the trouble.
moritz_ it's trouble for some sizes, but not for others 19:11
colomon trying 111 on the black and white right now. 19:13
moritz_ 101 segfaulted after 82 lines 19:16
colomon 111 still running.... 19:20
diakopter hmm; opensuse 11.2 seems not to come with perl 19:26
moritz_ finds that quite surprising 19:27
zloyrusskiy opensuse 11.2 comes with Perl for default
i'm using it
diakopter oh, hm
zloyrusskiy DVD version - 100%
diakopter I did the network install, and it downloaded 2GB worth
zloyrusskiy apparmor - using Perl
and opensuse have apparmor in all distributions i think 19:28
diakopter but then when I did yast2 -i perl it downloaded 7MB (for perl)... I expected it to say something like "perl already latest version"
I mean, I didn't try it beforehand :)
I installed an opensuse 11.2 VM just so I could have MonoDevelop 2.2 RC 19:30
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moritz_ I've compiled the mandelbrot script down to pbc, and that too keeps segfaulting 19:38
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colomon moritz_: 111x111 w&b worked. 20:30
and my little guy just got upset because I scrolled Camelia off the screen. :) 20:32
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moritz_ :-) 20:37
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pugs_svn r29340 | pmurias++ | [viv] mark code passed in -e as utf8 20:57
pmurias nothingmuch++ # his blog post about prove --state proved very usefull
pugs_svn r29341 | pmurias++ | [mildew] $foo.^bar(...)
r29342 | pmurias++ | [mildew]
r29342 | fix eval in the js backend
r29342 | CATCH {...} and CONTROL {...}
r29342 | = calls fetch
r29342 | handling of escapes in strings
r29342 | &YYY helper sub
r29342 | test are order according to the one which failed last
diakopter # interesting www.itu.dk/~sestoft/rtcg/rtcg-nwpt2005.pdf 21:11
arnsholt diakopter: Indeed 21:14
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arnsholt I like the second table on page 6 21:15
The JITed code is faster than the C code. Which just goes to show that a good JIT compiler may very well outperform hand-written code 21:16
(even though the example in that case is rather trivial)
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pmurias having 4 slides per page is a really horrible formating 21:18
arnsholt True. It always takes time to figure out which way they flow 21:19
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lisppaste3 colomon pasted "mandelbrot (221) crash backtrace" at paste.lisp.org/display/92048 21:51
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moritz_ hugme: tweet rakudoperl Perl 6 advent calendar day 13: Junctions perl6advent.wordpress.com/2009/12/1...junctions/ 22:34
hugme hugs moritz_; tweet delivered
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moritz_ ouch, after 10 minutes of processing a log file I get 22:54
duplicate named argument in call
in Main (file <unknown>, line <unknown>)
no idea what that call was, which file, which line
nor why it didn't fail before 22:55
23:02 Su-Shee left
diakopter reproducible? 23:05
moritz_ rakudo: say 1 cmp 1/1
p6eval rakudo 7ef386: 0␤
moritz_ diakopter: yes, found it
diakopter cool
moritz_ diakopter: and now I'm hanging on the next error with now source location
Multiple Dispatch: No suitable candidate found for 'cmp', with signature 'PP->I'
in Main (file <unknown>, line <unknown>)
diakopter rakudo or ng? 23:06
moritz_ rakudo
my $min_y = ([min] @.values.map: { [min] @($_) }) min 0; 23:07
I see why [min] would use cmp
but I need to sleep now. Maybe I can track it down tomorrow.
diakopter 'nite 23:12
pugs_svn r29343 | pmurias++ | [mildew] fix '\'', multis 23:24
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