Perl 6 Summary for 2005-01-31 through 2004-02-8
All~
Welcome to yet another summary in which I will undoubtedly confuse to
homophones. Probably more than a few this week as I am a little tired.
But perhaps the alien on my window or the vampire on my monitor will
help straighten it all out.
Perl 6 Language
autothreading generalization
Luke Palmer's thread about auto-threading seems to have wound down
without much resolution, or at the very least without a syntax that I
like.
<http://xrl.us/e26z>
Featherweight Perl6
Autrijus Tang introduced Featherweight Perl6, a side-effect-free subset
of Perl6. FP6 is the first step on a journey for Pugs to conquer the
world.
<http://xrl.us/e262>
Value Types vs Implementation Types
Autrijus Tang in his work on FP6 became confused by types. He asked some
questions about Types on perl 6 language and was apparently told to go
to perl 6 compilers. From perl 6 compilers, he was told he should really
be on perl 6 language. Sorry for the run around, the proper place for
questions about language semantics is perl 6 language as he originally
posted. Eventually all of that was settled and he even got his question
answered.
<http://xrl.us/e263> -- original post
<http://xrl.us/e264> -- retry with less compiler speak
Logic Programming in Perl 6
Ovid asked what logic programming in perl 6 would look like. No answer
yet, but I suppose I can pick the low hanging fruit: as a limiting case
you could always back out the entire perl 6 grammar and insert that of
prolog.
<http://xrl.us/e265>
the leaning tower of numbers
Autrijus Tang asked what sort of number tower Perl6 had. He was planning
(and implemented) that of Scheme until he gets an answer.
<http://xrl.us/e266>
some quick questions
Autrijus Tang asked a few questions about operators in specific
contexts. He got a few answers, although I don't think he got them all.
<http://xrl.us/e267>
getopt::signature
Juerd wants to be able to give his script a general signature which
magically parses command line arguments. Many people thought it was a
cool idea that should be provided as a module rather than in the core.
This led to talk about creating a signature object which could be passed
to this module so that it doesn't need macros. Sounds good to me.
<http://xrl.us/e268>
S03 inconsistency
Juerd found a knit to pick. No comment about whether to pick the first
or second option though...
<http://xrl.us/e269>
regex precedence
Nicholas Clark wondered about adding a little operator precedence to
regexes so that people could avoid a few common problems. Sounds like a
good idea to me...
<http://xrl.us/e27a>
pipe dreams
Juerd wondered if he could mix = and ==> in a sane way. The answer
appears to be no. Once you bring in ==> you should stick with it.
<http://xrl.us/e27b>
4 < $x < 2 == true?!?
Autrijus Tang wondered how junctions and chained comparators worked. He
found that under certain semantics, one can receive very troubling
answers. Larry agreed with Autrijus that the unintuitive semantics
should be avoided.
<http://xrl.us/e27c>
Perl 6 Compilers
Pugs 6.0.0
Autrijus Tang released Pugs 6.0.0. It has many cool features and was
created in only 6 days. A testament to the power of Haskel or the
caffeine intake of Autrijus. (Although to be fair he skipped more
version numbers then Java did in its jump to 5.0...)
<http://xrl.us/e27d> -- anouncement
<http://autrijus.org/pugs/> -- pugs website
<http://use.perl.org/~autrijus/journal/> -- implementation journal
Parrot
gdbmhash warning
Bernhard Schmalhofer fix a problem where gdbmhash could make configure
produce a warning. Leo applied it.
<http://xrl.us/e27e>
PyNCI
Sam and Leo worked out the correct way to create NCI methods for Python.
Leo ended by proposing a table to assist Parrot based on the current
language, no answer to that idea...
<http://xrl.us/e27f>
makefile cleanup
Bernhard Schmalhofer cleaned up some of the makefiles and configure
system. Leo applied the patch.
<http://xrl.us/e27g>
ParrotIOLayer* const or not
Fran�ois Perrad provided a patch making the ParrotIOLayer* const in the
API. Leo applied it, but Melvin warned that while this may be safe now,
the API intended to allow mutability. I think for the moment it is still
in though...
<http://xrl.us/e27h>
Win32 Parrot
Ron Blaschke helped Parrot back onto its feet in the windows world.
<http://xrl.us/e27i>
<http://xrl.us/e27j>
<http://xrl.us/e27k>
<http://xrl.us/e27m>
<http://xrl.us/e27n>
<http://xrl.us/e27o>
<http://xrl.us/e27p> -- latest results
Parrot_load_bytecode failure?
Ian Joyce wondered what would happen if Parrot_load_bytecode failed. The
answer: exception.
<http://xrl.us/e27q>
reading past EOF
Matt Diephouse was annoyed that reading past EOF gave an unhelpful error
message. Leo fixed it.
<http://xrl.us/e27r>
FreeBSD build problems
Will Coleda found a build problem for parrot on FreeBSD. Adriano
Ferreira provided a work around, but the build system needs to be
smarter too. On a side note, I want a picture of the BSD daemon (pitch
fork included) with a pirate hat, an eye patch, and a parrot on its
shoulder.
<http://xrl.us/e27s>
gmake requirement?
There was some confusion about what does and does not require gmake on
FreeBSD. IMCC does not. ICU does. Fortunately, with Dan's string stuff
ICU will become optional and so we won't require it.
<http://xrl.us/e27t>
locate_runtime_file with absolute paths
Jeff Horwitz notices that Parrot_locate_runtime_file could segfault when
playing with an absolute path. He put some work in to fix it.
<http://xrl.us/e27u>
expected vpm.imc output error
Bernhard Schmalhofer fixed a failing benchmark test which just had
slightly wrong output expectations. chromatic (whose uncapitalized name
does not bother me) applied the patch.
<http://xrl.us/e27v>
subvercive parrot
Ron Blaschke asked if Parrot was planning to move to SVN. Many argument
in favor; few argued against. No word from the powers that be.
<http://xrl.us/e27w>
Parrot 0.1.2?
Will Coleda wondered if the time for Parrot 0.1.2 was growing close. Leo
pointed out some things that need to be fixed. Honestly, the real
impetement is that we do not yet have a cool code name for it. I suggest
kiwi, because everyone knows they really want to be parrots.
<http://xrl.us/e27x>
making an array out of an undef
Ron Blaschke was surprised when an operation was quitely turning an
Undef into an array. Leo explained to him that this set of semantics was
known and expected.
<http://xrl.us/e27y>
solaris issues
Andy Dougherty notices that parrot was failing some tests on solaris. He
tried to provide enough info for people to help him, but no one did.
<http://xrl.us/e27z>
Linux PPC issues
Jeff Dik posted a patch that worked around a problem on Linux PPC.
chromatic pointed out that there was a more correct patch already in RT.
Jeff Dik slapped himself on the forehead and reminded himself to check
RT first.
<http://xrl.us/e272>
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