I have a Module AttrX::Mooish which implements some of attribute features of Moo/Moose frameworks (lazyness, trigger, etc.). I also wanted the module to be as transparent to the end user as possibl...

When running Raku code on Rakudo with the MoarVM backend, is there any way to print information about how a given Str is stored in memory from inside the running program? In particular, I am curiou...

I'm trying to figure out how I can rewrite NQP's Precedence Parser in Raku : The Precedence Parser is implemented here: https://github.com/Raku/nqp/blob/master/src/HLL/Grammar.nqp#L384 NQP should b...

In Apocalypse #1 Larry wrote, with my added emphasis: Raku will support multiple syntaxes that map onto a single semantic model. Second, that single semantic model will in turn map to multiple pla...

If I have Grammar a and define a Grammar b that have a block '{ ... }' that has syntax of Grammar a, is it possible to somehow link these grammars together? I.e. Grammar a is Tcl and Grammar b is e...

How can I augment a class with a multi-method that will be called before the already defined one ? I am trying to enable negative subscript: @arr[-1] like in this article but without changing the ...

... Or how to change $<sigil>.Str value from token sigil { ... } idependently from the matched text. Yes I'm asking how to cheat grammars above (i.e. calling) me. I am trying to write a Slan...

I want to reuse the token parameter from Perl6::Grammar in my custom slang to add a "custom-param" parameter without cargo culting. What I mean: my $main-grammar = $*LANG.slang_grammar('MAIN'); m...

How to print an object in NQP ? (For debugging purposes) It is easy in Raku: say that is calling gist in its short loop code dd The tiny Data Dumper as shown in this post class Toto { has $....

There are two types of alternation in Raku's regex: the | and ||. What is the difference ? say 'foobar' ~~ / foo || foobar / # ｢foo｣ say 'foobar' ~~ / foo | foobar / # ｢foobar｣

The documentation in Perl 6 programs, using the Pod 6 DSL, are actually parsed as part of the code; this makes that documentation available, inside the program, as the $=pod variable. However, I'd...

In the Perl 6 world, currying is an universal term indicating partial instantiation, and it's also used in the world of (parametrized) roles. However, it's not clear how to actually use it: role ...

From World.nqp, line 3602 : nqp::if( nqp::istype(nqp::atpos($task,3),$!Block), QAST::Op.new( :op<call>, QAST::WVal.new(:value(nqp::atpos($task,3))), $self, $getattr ), nqp::if( nqp:...

I am trying to learn myself how to debug rakudo and nqp. So this is my first attempt: cd $HOME/debug git clone https://github.com/rakudo/rakudo.git cd rakudo perl Configure.pl --gen-moar --gen-nqp...

This is related to this question on accesing the POD, but it goes further than that. You can easily access the Abstract Syntax Tree of a Perl 6 program using: perl6 --target=ast -e '"Þor is mighty...

I'm trying to find how the binding operation works on attributes and what makes it so different from nqp::bindattr. Consider the following example: class Foo { has @!foo; submethod TWEAK { my...

I'd like to communicate with mpv using Unix sockets, but Perl 6 doesn't offer any high level interface for doing that. So I thought I could write a little module for that, started digging deep...

NQP was mainly designed to bootstrap the perl6 language, but I'm thinking whether it is possible to use it as optimization. I know that rakudo is not perfectly optimized yet, but I'm looking for a ...