»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! | Rakudo Star Released!
Set by diakopter on 6 September 2010.
dnl too close to call 00:02
tadzik what's the opposite of Str.ord? 00:05
flussence something.chr? 00:06
tadzik yes, thanks flussence
flussence educated guess, it's called that in most languages I'm aware of :)
tadzik Forgot that :) 00:07
flussence (weird, I can't find .ord in the specs...) 00:09
oh, there it is.
S29
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Chat5895 heyyyyy im new here 00:40
who wanna chat
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diakopter Chat5895: this is a room to discuss the programming language Perl 6 00:41
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Chat5895 ok what about it 00:41
diakopter Chat5895: is that why you joined this room? :) 00:43
Chat5895 i guess 00:44
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diakopter oh, Chatmosphere, how I love thee 00:51
flussence now I'm wondering if we're somehow at the top of /list ...
araujo it is just that perl6 is attractive even for non-programmers 00:52
flussence hmm, apparently that IP is some sort of proxy, I thought these /Chat\d{4}/ were all the same person... 00:54
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takadonet1 yo 02:31
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takadonet1 agentzh: yo 02:38
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agentzh takadonet1: hiya 02:39
takadonet1 agentzh: how are you sir? 02:40
agentzh takadonet1: enjoying jemplate in our product ;)
takadonet1: and lots of nginx/lua/c hacking on its server side :)
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agentzh takadonet1: looking forward to rewriting all of our DSL compilers with Perl 6. 02:41
takadonet1: currently implemented by Perl 5 + Parse::RecDescent + Moose ;)
takadonet1 agentzh: nice. Planning to rewrite bioperl6 :)
i mean 5 * 02:42
agentzh great :D
takadonet1 5 to 6
agentzh for now the biggest bottleneck is rakudo's performance. Waiting for more optimizations :D 02:43
takadonet1 agentzh: ya same boat so starting to port some of the most used perl 5 module on cpan to pass the time 02:44
agentzh *nod*
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Chat1591 yo 03:00
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diakopter ok. you crackberry jokers are getting to me 03:00
and I can say that as someone who carries one myself 03:01
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sorear good * #perl6 06:11
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sorear dalek? 08:32
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sorear out 08:46
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daxim are perl6 grammars powerful enough to do matching on unordered sets of characters? I'm sure it already does a fine job on ordered sets of characters == strings 09:11
hypothetic example with made-up syntax so you can see what sort of problems I want to achieve: say 'full house' if @poker_hand =~ set_match('these{2}', 'those{3}')
moritz_ daxim: I think regexes/grammars are a poor tool for that job 09:20
daxim so I feared. what's this which I need called, then? it would also need to include backtracking 09:21
moritz_ has no idea 09:22
Juerd daxim: What is "back" in an unordered set? 09:39
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daxim I'll illustrate with a more complex example. backtracking is necessary when things can be combinated in several possible ways 09:40
bag = <4 4 4 5 5 5 6 6 6 7 7 7>; match: triplets{4} | triplets{1} series_of_3{3} 09:44
note the second part of the conjunction has two solutions 09:45
Juerd That bag seems ordered 09:48
Why would you need all solutions? In poker only the highest hand counts
All other matches are irrelevant 09:49
daxim I need them to see which one is highest. (it's not poker)
Juerd I guess the @poker_hand fooled me 09:50
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satyavvd Range.roll() not implemented yet? 10:22
moritz_ rakudo: say (1..5).roll(3) 10:24
p6eval rakudo 5f5bae: OUTPUT«315␤»
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moritz_ seems rather implemented to me 10:24
satyavvd ok will get latest rakudo... 10:26
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takadonet hey everyone 12:03
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tadzik hey takadonet 12:12
takadonet tadzik: hey 12:13
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takadonet colomon: morning 12:19
colomon o/ 12:20
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dnl "evolution is a myth!" - sincerely, your tea party 13:14
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takadonet dnl: ... 13:14
dnl they really think so 13:15
moritz_ sadly you don't have to meet certain requirements on intelligence or education to hold high political positions :( 13:17
jnthn It'd not be such a problem if more voters cared for such qualifications, though. 13:19
flussence USian politics as a whole scares the crap out of me.
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moritz_ same here 13:21
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takadonet just love how they spend about 4 billion dollars on ads for the mid term election 13:24
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jnthn Same, but to be fair, I sorta suspect some of the US folks find European politics scary too. :-) 13:24
flussence they would've spent more, but they're still using 32-bit computers :)
jnthn lol
moritz_ :-) 13:25
just read in my news feed a comment (translated) "America is not like Europe would like it to be" 13:26
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takadonet I should not talk about how bad the states are.... Our science minister in Canada does not believe in evolution 13:28
moritz_ ouch. 13:30
in Bavaria we had a minister for education who sent her children to a private school :-) (not quite as bad, but still amusing) 13:31
jnthn When I was a kid I used to assume that the ministers for a particular thing had some background in that area.
takadonet jnthn: sometimes
jnthn takadonet: Far less than one would hope, it seems. 13:32
takadonet jnthn: indeed
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bluescreen yt? 13:33
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bluescreen Patterner? 13:33
hehe
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jnthn
.oO( Somebody who patterns, clearly. )
 13:35
moritz_ do the patterns match? 13:36
colomon well, the one in Rebma is backwards... 13:39
;)
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flussence ooh, I just figured out link($filehandle, 'filename') works in p5... (perldoc is a bit misleadingly worded there) 13:43
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mathw o/ 13:54
colomon \o 13:55
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Util To swap two scalars in Perl 6: ($a, $b) = ($b, $a); 14:08
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Util How best to swap two arrays? 14:08
frettled rakudo: my @a = 1, 2; my @b = 3, 4; (@a, @b) = (@b, @a); say @a.perl; 14:09
p6eval rakudo 5f5bae: OUTPUT«[3, 4, 1, 2]␤»
frettled hmm. 14:10
frettled feels stupid. 14:11
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colomon rakudo: sub swap($a is rw, $b is rw) { ($a, $b) = ($b, $a); }; my @a = 1, 2; my @b = 3, 4; swap(@a, @b); say @a.perl 14:12
p6eval rakudo 5f5bae: OUTPUT«[3, 4, 1, 2]␤»
colomon :\
jnthn ...that looks wrong. 14:13
flussence that looks p5ey...
Util rakudo: my @a = <a b c>; my @b = <x y z>; my ($a, $b) = map {[@($_)]}, @a, @b; [:$a, :$b].perl.say; 14:14
p6eval rakudo 5f5bae: OUTPUT«["a" => ["a"], "b" => ["b"]]␤»
Util ???
flussence rakudo: sub swap($a is rw, $b is rw) { my $tmp := $a; $b := $a; $a := $tmp; }; my @a = 1, 2; my @b = 3, 4; swap(@a, @b); say @a.perl 14:15
p6eval rakudo 5f5bae: OUTPUT«(timeout)»
flussence :/
trying to be too clever. 14:16
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moritz_ rakudo: sub swap($a is rw, $b is rw) { say $a.perl; say $b.perl; ($a, $b) = ($b, $a); say $a.perl; say $b.perl}; my @a = 1, 2; my @b = 3, 4; swap(@a, @b); 14:18
p6eval rakudo 5f5bae: OUTPUT«[1, 2]␤[3, 4]␤[3, 4, 1, 2]␤[]␤»
jnthn Oh 14:19
It can't really work with is rw I guess
moritz_ looks like $a := @a doesn't really make $a a scalar
jnthn It can't with is rw
Siknce that implies is parcel 14:20
Which implies "don't apply any context"
Since if you apply context, you just lost the original value.
frettled It apperas that we're essentially stuck with using a temporary variable. 14:27
rakudo: my @a=1,2; my @b=3,4; say @a.perl; say @b.perl; my @c=@a; @a=@b; @b=@c; say @a.perl; say @b.perl; 14:28
p6eval rakudo 5f5bae: OUTPUT«[1, 2]␤[3, 4]␤[3, 4]␤[1, 2]␤»
jnthn my (@a, @b) := @b, @a; # modulo the re-declaration error, that'd do it.
rakudo: my @a; my @a; say "alive"
p6eval rakudo 5f5bae: OUTPUT«===SORRY!===␤Redeclaration of symbol @a at line 22, near "; say \"ali"␤»
jnthn damn, it's an error, not a warning.
frettled Maybe we'll have to use MONKEY_GROPING. 14:29
Util Thanks, all 14:32
My *real* question is: How can you do `@a Z+ @b` when you don't know which array is larger?
I want to treat mis-matched lengths as if there were zero-filled on the right.
@a Z+ @b ignore extra elements.
@a <<+>> @b pads the short array by repeating the start of the short array.
( @a, * ) repeats the last element. 14:33
colomon @a, 0 Z+ @b, 0
flussence Look at the source for :samespace :)
Util ( @a, ( 0 xx *) ) Z+ ( @b, ( 0 xx *) ) is infinite.
colomon (is that implemented yet?)
Util ( @a, ( 0 xx *) ) Z+ @b requires you to swap @a and @b when @a is longer,
which is why I wanted to know about swapping arrays.
( @a, ( 0 xx (+@b - +@a )) ) Z+ ( @b, ( 0 xx (+@a - +@b) ) ) does work,
colomon @a, 0, * Z+ @b, 0, *
Util but I am hopefully that something shorter can be invented.
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colomon also infinite. 14:33
hmmm.
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moritz_ (@a, 0 xx * Z+ @b, 0 xx *)[^(@a max @b)] 14:36
colomon both arrays have to be finite for this to work. 14:37
(I mean, in general, not just in moritz_++'s solution) 14:38
colomon must not yield to temptation to define a new meta-op... 14:40
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moritz_ the E (for Extend) meta op 14:41
EZ+
isBEKaml_ hi, #perl6! :)
jnthn Can't wait to use the serialized extending cross meta-operator. 14:42
isBEKaml_ Extending cross metaop? EX= ? 14:43
Util moritz's solution works if I change (@a max @b) to (+@a max +b). Since the list is lazy, it is OK to be infinite if we tell it how many elements to take.
moritz_ isBEKaml_: you forgot the Serialized (S) part
isBEKaml_ moritz_: wow, that'd make it something. ;) 14:44
jnthn ;)
colomon Util: with +@a max +@b, neither list can be lazy 14:45
unless ...
rakudo: my @a = 1..*; say +@a
p6eval rakudo 5f5bae: OUTPUT«-9223372036854775808␤»
colomon rakudo: my @a = 1...*; say +@a
p6eval rakudo 5f5bae: OUTPUT«(timeout)» 14:46
Util my @a and @b are not lazy. I meant that the generated (0 xx *) lists are lazy.
colomon ah, yes.
Util colomon: but I see that I misunderstood your statement: "both arrays have to be finite for this to work"
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isBEKaml_ rakudo: my @a = 1..*; say @a; 14:47
p6eval rakudo 5f5bae: 14:48
..OUTPUT«(timeout)101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130…
isBEKaml_ well, I didn't expect this (attempting to shoot myself) :D
hugme: hug rakudo 14:49
hugme hugs rakudo
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bbkr rakudo: say Whatever ~~ *; say * ~~ Whatever; # why in first case I get "Bool::True" and in second I get "1" ? 14:57
p6eval rakudo 5f5bae: OUTPUT«Bool::True␤1␤»
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colomon we had a similar case yesterday, something wrong in an ACCEPTS somewhere, I suspect. 15:00
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moritz_ bbkr: rakudobug 15:00
rakudo: say 1 ~~ Int
p6eval rakudo 5f5bae: OUTPUT«1␤»
moritz_ rakudo: say 1 ~~ 1
p6eval rakudo 5f5bae: OUTPUT«Bool::True␤»
moritz_ same difference
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bbkr moritz_: thanks. i assume it's already reported 15:01
moritz_ rt.perl.org/rt3/Ticket/Display.html?id=78748
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moritz_ masak++. Of course. 15:04
colomon not sure if this is the source of the problem, but it looks to me like ConcreteRole.ACCEPTS and Role.ACCEPTS are both wrong in this way. 15:05
rakudo: say 1 ~~ Numeric
p6eval rakudo 5f5bae: OUTPUT«1␤»
colomon yup
bbkr rakudo: say Bool.so # how about this one? *.so should always give output as Bool value, compare to "Int.so" for example 15:06
p6eval rakudo 5f5bae: OUTPUT«Bool()␤»
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moritz_ well, it is a Bool value :-) 15:07
colomon rakudo
rakudo: say Int.so
p6eval rakudo 5f5bae: OUTPUT«Bool::False␤»
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bbkr hmm, from my spec understanding you should get Bool::False or Bool::True values from .so operator, not Bool class 15:08
moritz_ then it should be False
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bbkr indeed. should I report? 15:08
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moritz_ or fix :-) 15:09
rakudo: say Bool.Bool
p6eval rakudo 5f5bae: OUTPUT«Bool()␤»
moritz_ augment class Bool does Abstraction { method Bool { self } 15:10
should probably be self ?? True !! False
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colomon huh. 15:12
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colomon does that imply that, say Real.Numeric should be { self // 0 } ? 15:12
moritz_ hm. Maybe. Not sure 15:13
it's something I'd like to hear TimToady's opinion on
colomon yeah.
it seems to me the answer should be the same in either case. 15:14
moritz_ or maybe .so shouldn't blindly dispatch to .Bool 15:16
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colomon yeah, hmmm. 15:17
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jnthn I suspect part of the issue there is the circularity saw. 15:21
Bool needs ConcreteRole to exist/work. 15:22
So doesn't exist at that point.
We could make it look up Bool::True and Bool::False and fudge in some fake values until we get to the right point in the bootstrap I guess.
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tadzik ~~ 15:56
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colomon jnthn: huh 16:00
could we .wrap the methods once Bool has been defined, or something like that?
jnthn no
Better to replace the thing in the namespace. 16:01
*packAGFE
*package
Then it looks up the correct thing from there on.
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colomon replace the method entirely, you mean? 16:04
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jnthn no 16:05
replace what's installed at Bool::True
e.g. put a 1 there
then once Bool is set up, Bool::True is installed there 16:06
colomon ah.
jnthn So all call from then on find that.
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TimToady rakudo: my @a = 1,2; my @b = 3,4; (@a,@b) := (@b,@a); say ~@b 16:08
p6eval rakudo 5f5bae: OUTPUT«3 4␤»
TimToady rakudo: my @a = 1,2; my @b = 3,4; (@a,@b) := @b,@a; say ~@b 16:09
p6eval rakudo 5f5bae: OUTPUT«3 4␤»
TimToady hmm
jnthn rakudo: my @a = 1,2; my @b = 3,4; (@a,@b) := @b,@a; say ~@a
p6eval rakudo 5f5bae: OUTPUT«1 2␤»
TimToady looks like the bind has turned into a no-op somehow
jnthn wonder if parcel binding works.
yeah
that's not good.
decommute &
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takadonet soo quiet..... 17:14
TimToady shh 17:16
colomon too quiet. ;)
takadonet still working on that text::Wraps module!
colomon \o/
takadonet i figure out how the p5 modules does it and well.... it's weird
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tadzik I had the same feeling with File::Find 17:26
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diakopter 17:45
tadzik
takadonet ?
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diakopter freenode was confused about my nick 17:46
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PacoLinux there is no version of Song 99 Bottles of Beer in perl6 ? -> www.99-bottles-of-beer.net/ 17:55
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masak oh hai from Austria! \o/ 17:59
masak digs into some fervent November blogging 18:03
colomon rakudo: say "5 bottles", *.pred ... 1; 18:05
p6eval rakudo 5f5bae: OUTPUT«(timeout)5 bottler5 bottleq5 bottlep5 bottleo5 bottlen5 bottlem5 bottlel5 bottlek5 bottlej5 bottlei5 bottleh5 bottleg5 bottlef5 bottlee5 bottled5 bottlec5 bottleb5 bottlea5 bottldz5 bottldy5 bottldx5 bottldw5 bottldv5 bottldu5 bottldt5 bottlds5 bottldr5 bottldq5 bottldp5
..bottldo5 b…
Tene heh 18:06
colomon :\
masak rakudo: .say for map { $_ ~ " bottles" }, 5 ... 1
p6eval rakudo 5f5bae: OUTPUT«No candidates found to invoke for method 'map' on object of type 'Array'; available candidates have signatures:␤:(Mu : &block;; *%_)␤␤ in 'map' at line 1797:CORE.setting␤ in main program body at line 22:/tmp/h95RVOWKSj␤»
masak rakudo: .say for map { $_ ~ " bottles" }, (5 ... 1)
p6eval rakudo 5f5bae: OUTPUT«5 bottles␤4 bottles␤3 bottles␤2 bottles␤1 bottles␤» 18:07
masak rakudo: .say for map { $_ ~ " bottles" }, reverse 5..1
p6eval rakudo 5f5bae: ( no output )
masak rakudo: .say for map { $_ ~ " bottles" }, reverse 1..5
p6eval rakudo 5f5bae: OUTPUT«5 bottles␤4 bottles␤3 bottles␤2 bottles␤1 bottles␤»
colomon rakudo: say "5 bottles", { .subst(/\d+/, { $_ - 1}); } ... * == 1 ; 18:09
p6eval rakudo 5f5bae: OUTPUT«5 bottles4 bottles3 bottles2 bottles1 bottles␤»
colomon rakudo: say "5 bottles\n", { .subst(/\d+/, { $_ - 1}); } ... * == 1 ;
p6eval rakudo 5f5bae: OUTPUT«5 bottles␤4 bottles␤3 bottles␤2 bottles␤1 bottles␤␤»
Tene So, who's volunteering to port Lingua::EN::Inflect?
;) 18:10
colomon it looks surprisingly complicated 18:11
Tene Surprisingly? Are you new to English? ;) 18:12
colomon No, just surprised at the scope of the module. Damian++
Trashlord wait, what? 18:14
oh, right
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TimToady PacoLinux: see rosettacode.org/wiki/99_Bottles_of_Beer 18:32
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colomon TimToady++ 18:34
shortcircuit TimToady: For line 3 of that example, the expression ('Take one down, pass it around' xx 99) is placed in the array. Is the expression evaluated before or after the assignment? 18:35
IOW, does @actions contain two members, or 100?
colomon before 18:36
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TimToady xx is lazy but list assignment is not, unless it knows that there are an infinite number of things on the right 18:37
shortcircuit Is it possible to trick the array assignment into being lazy, even though the number of elements would be finite? 18:38
shortcircuit is thinking about memory optimization cases.
TimToady sure, use := instead
shortcircuit Cool
moritz_ TimToady: what should Bool.Bool return? Bool or Bool::False?
TimToady: and what about Bool.so?
shortcircuit Oh, God, I just had some awesome program loop behaviors come to mind using xx, := and function calls. 18:39
shortcircuit sheds a tear
It's beautiful...
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TimToady moritz_: do you mean Bool as a value, or anything of type Bool? 18:39
moritz_ TimToady: I mean the type object 18:40
TimToady type objects are false
moritz_ so Bool.Bool returns False?
masak blog post! strangelyconsistent.org/blog/novemb...mprovement
TimToady I'd think so
masak makes sense to me.
TimToady certainly .so returns true or false
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TimToady .Bool is just type conversion, arguably, and actual testing of the truthiness is something below that 18:41
colomon likewise, should Int.Real return 0? 18:42
masak premiere &
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TimToady I don't know how you convert to a role 18:42
that doesn't make sense to me
moritz_ prefix:<+> also coerces to role (Numeric) 18:43
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colomon errr.... .Numeric is pretty fundamental now. 18:43
TimToady it does, but Numeric has to handle that specially 18:44
moritz_ I'd think it means "coerce to a type that implements that role"
colomon what moritz_ said.
TimToady so Int.Real can return Int, meseemeht
*th
colomon so +Int should be Int? 18:45
rakudo: say +Int 18:46
p6eval rakudo 5f5bae: OUTPUT«Int()␤»
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TimToady phone? 20:00
pmichaud calling now 20:03
sjohnson calls TimToady
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jasonmay phone..? p6 superhero hotline? 20:19
diakopter weekly sixperl chat; minutes/transcript was posted once upon a time to use.perl.org 20:20
last I saw was from May 20:22
jasonmay oh cool 20:25
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dukeleto It would be nice if the perl 6 talk minutes were publicly viewable. 20:32
diakopter I'm sure it takes work to transcribe them then work to make consensus on sanitizing/clarifying them :D 20:33
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PerlJam diakopter: If one of the participants would record the conversation, transcription/condensation/clarification/etc could be out sourced 21:35
diakopter I'm sure they are recorded
chromatic historically transcribed, afaicg 21:36
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PerlJam I'm not sure they are recorded. 21:38
diakopter oh
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lue ohayo ツ 21:46
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donaldh jnthn: Hi, I'm experimenting with Zavolaj 22:37
jnthn: It's really nice, but I've reached some limits. 22:38
jnthn donaldh: Yes, it has some.
donaldh: Especially the lack of a way to handle structs. That's something that I can can be improved once the Parrot NCI GSOC work lands in master. 22:39
donaldh jnthn: I'm using it with the parrot gsoc_nci branch at the moment.
Sqlite3 makes extensive use of out params, typically opaque. 22:40
jnthn Ah, OK. There's not handling for that just yet.
donaldh So I'm trying to figure out a way of implementing the V nci parameter type
:D 22:41
jnthn thinks for a moment how that could look
donaldh in PIR I use UnManagedStruct
And V writes a pointer into UnManagedStruct 22:42
Is there any equivalent type I can use in Rakudo? 22:43
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donaldh Or a wrapper for UnManagedStruct? 22:43
jnthn Maybe a wrapper for UnManagedStruct is the way to go (more) 22:44
Maybe it wants some "placeholder" style thing like OpaquePointer 22:45
e.g. OpaquePointerOut or some such
donaldh Yes, I was thinking that way too.
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jnthn And the scalar that gets passed in gets assigned to. 22:45
Oh 22:46
donaldh Only it doesn't remain OpaquePointerOut for long. It becomes an in param to the next call.
jnthn True...
Note that OpaquePointer isn't actually used as a class ever.
donaldh I see that. Just a type.
jnthn It's only used by the NCI sig generator.
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donaldh There is a general problem with out params that parrot never used to handle very well. 22:47
I'm not sure if it's better because I haven't looked recently. 22:48
jnthn *nod*
donaldh admits that 'V' wasn my invention.
_was_
jnthn :-)
Yeah, I'm just pondering how to neatly map it to something in Zavolaj.
$c is just a capture, so you can get the scalar out of it and assign to it just fine. 22:49
I wonder if the way to do it is to not just call with |$c, but instead if there are out parameters (just use a "flag type" like OpaquePointer) it creates and passes in an unmangedstruct to get the pointer. 22:50
donaldh I'm staring at your method Bool that does some unmanaged magic, but not quite understanding it ;-
jnthn Reading the defined v-table method in the appropriate PMC should be revealing on that one. 22:51
I forget exactly what it does off-hand...
donaldh ah
thanks for the pointer.
donaldh is learning fast here.
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jnthn Wow. !update-desc-to-index is evil! 22:52
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donaldh ^^ nice symmetry to that last statement 22:53
jnthn ;-)
My feeling is that you'll need to do something in the trait_mod with $c though 22:54
e.g. re-build the argument list when there's out pointers.
And slot the unmanaged struct to populate in there. 22:55
Assigning it to the passed in scalar container.
(Maybe call !STORE directly)
Zavolaj does some evil stuff, but mostly to keep the evil out of everything else that's using it. :-) 22:56
donaldh You've just said about 5 higher order things that I barely understand right now ;0
jnthn Oops, sorry. :-)
donaldh heh
jnthn Do you understand what's going on between lines 104 and 113? 22:57
donaldh I'll go play with this and maybe come and bug you with questions.
jnthn That's the area I expect you'll need to make changes.
donaldh I don't right now [lines ...] but it's a good learning exercise for me. 22:58
jnthn I should explain at least one thing 'cus it's...bizzare. :-)
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donaldh k 22:59
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jnthn In Rakudo when you write a sub foo, the thing that gets installed in the lexpad (or package, or whatever) isn't actually the Parrot Sub PMC. 22:59
It's a wrapper object around one.
donaldh wow, I remember that from way back. 23:00
jnthn The attribute in the wrapper containing that Parrot sub is in the $!do
pir::setattribute__vPsP($r, '$!do' ...
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jnthn That is just saying "oh, we'll throw out the sub body and replace it with something that does an NCI call instead" 23:00
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donaldh Gotcha. 23:01
jnthn Just thought it was worth demistifying that bit. :-) 23:02
What follows is not so bad once you go through it piece by piece.
donaldh Am I right in saying that pir::descalarref__PP is just a dereferencing step? 23:03
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jnthn Yes. Decontainerization. 23:04
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donaldh is that roughly equivalent to .param pmc ref \n ref = deref ref 23:06
I used to do this in Rakudo: $dbHandle = q:PIR { %r = new 'UnManagedStruct' }; 23:08
And: $dbHandle = q:PIR { %r = new 'UnManagedStruct' };
Ooops: my $s = Sqlite3::sqlite3_open($db, deref($dbHandle));
nopaste? 23:10
jnthn donaldh: Roughly. 23:12
donaldh: It's a specialized op
That knows about Rakudo's container types
But semantically it's a lot like deref.
donaldh Okay, thanks
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donaldh Thanks jnthn++ I'll go play, but very time challenged just now so it might be a while. 23:14
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jnthn donaldh: No worries. Have fun, when you get to it. :-) 23:15
donaldh: Oh, do you have a Zavolaj commit bit?
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donaldh jnthn: nope 23:15
jnthn github id?
donaldh [email@hidden.address]
sorry donaldh 23:16
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jnthn donaldh: You're added. 23:16
donaldh thanks! 23:17
jnthn donaldh: I'm happy to code-review and then merge through the fork queue if you prefer to do things that way, but if you're confident, go ahead and commit. :-)
Please do check that e.g. MiniDBI still works, though.
There's not really a test suite for Zavolaj yet. :(
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jnthn Though things that use it (like MiniDBI) do have one. :-) 23:18
"Test suite through proxy." ;-)
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donaldh Nice :-) 23:19
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donaldh This may all lead me to hacking on MiniDBI for Sqlite3 support. 23:19
jnthn: thanks again and goodnight. 23:20
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jnthn donaldh: Excellent 23:21
night :-)
lue rakudo: $a = "hello;world"; say $a.split(';').perl 23:22
p6eval rakudo 142d22: OUTPUT«===SORRY!===␤Symbol '$a' not predeclared in <anonymous> (/tmp/sO3fKMsLUK:22)␤»
lue rakudo: my $a = "hello;world"; say $a.split(';').perl
p6eval rakudo 142d22: OUTPUT«("hello", "world")␤»
lue rakudo: my $a = 3;say $a; 23:23
p6eval rakudo 142d22: OUTPUT«3␤»
23:23 donaldh left 23:25 sftp left
araujo pastie.org/1270943 23:25
though it follows the smalltalk infix operators (messages) rules
:P
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lue how do I access certain characters of a string again? 23:34
(something like $a[0])
rakudo: my $a = "hello"; say $a[0] 23:39
p6eval rakudo 142d22: OUTPUT«hello␤»
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Util rakudo: my $s = "abcdef"; $s.substr(1,3).say; # Starting at position 1 (0-based), return 3 characters 23:41
p6eval rakudo 142d22: OUTPUT«bcd␤»
Util lue: using substr, either as a function or as a method. Method demonstrated above. 23:43
rakudo: my $s = "abcdef"; print substr( $s, 1,3 ); # function version 23:44
p6eval rakudo 142d22: OUTPUT«bcd»
lue How would I remove the last character of a string? 23:45
flussence .chop?
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Util flussence: yes, but the chop method does not mutate its argument (unlike in Perl5); it returns the chopped string. 23:51
So the answer is $s = $s.chop , which can be shortened to $s .= chop;
rakudo: my $s = "abcdef"; $s .= chop; $s.say
p6eval rakudo 142d22: OUTPUT«abcde␤»
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Util The old "chop" semantics live on as "p5chop": 23:53
rakudo: my $s = "abcdef"; p5chop $s; $s.say
p6eval rakudo 142d22: OUTPUT«abcde␤»
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