Hello everybody,
that's a few month i'm following this mailing list. i dont like all the changes
that are being made to perl, i'm using perl since '97, anyway if i think about
it they're mostly all (until i understand everything) benefit to the language.
To make the background i was an
Luke Palmer wrote:
This requires infinite lookahead to parse. Nobody likes infinite
lookahead grammars.
Perl already needs infinite lookahead. Anyways, most people
don't care whether a grammar is ambiguous or not -- if we did,
natural human languages would look very different.
People want
On Thu, 12 Sep 2002, Ken Fox wrote:
Luke Palmer wrote:
This requires infinite lookahead to parse. Nobody likes infinite
lookahead grammars.
Perl already needs infinite lookahead. Anyways, most people
don't care whether a grammar is ambiguous or not -- if we did,
natural human
Luke Palmer wrote:
On Thu, 12 Sep 2002, Ken Fox wrote:
Perl already needs infinite lookahead.
Really? Where?
Indirect objects need infinite lookahead and they are
in the core language. Hyper operators may need lookahead.
Place holders may need lookahead. User defined rules
will definitely
BTW, there are some parser generators that handle
ambiguous grammars -- they either support backtracking,
infinite lookahead, or simultaneously parse all possible
derivations. In the case of the simultaneous parse, they
can actually return multiple parse trees and let the
code generator
Ken Fox:
# derivations. In the case of the simultaneous parse, they can
# actually return multiple parse trees and let the code
# generator decide how to interpret things.
Of course, in Perl 6, they'd return a superposition of all possible
parses, and trying to use the superposition would
From: Ken Fox [EMAIL PROTECTED]
BTW, does anybody else find is rx funny?
Only because they're not called regular expressions anymore. How about
px for pattern expression?
-Miko
mail2web - Check your email from the web at
I'm thinking XS thoughts because we're going to need a few external
things at SOME point It would be so nice if Perl 6's XS was part of
the language, rather than an external pre-processor.
Something like:
module somesuch;
use External (language=C);
sub chdir(string $path //=
Aaron Sherman [mailto:[EMAIL PROTECTED]] wrote:
I'm thinking XS thoughts because we're going to need a few external
things at SOME point It would be so nice if Perl 6's XS
was part of the language, rather than an external pre-processor.
[ some interesting stuff]
Thoughts?
Its good to
Aaron Sherman:
# I'm thinking XS thoughts because we're going to need a few
# external things at SOME point It would be so nice if Perl
# 6's XS was part of the language, rather than an external
# pre-processor.
#
# Something like:
#
# module somesuch;
# use External
On Thu, 2002-09-12 at 20:09, David Whipp wrote:
Aaron Sherman [mailto:[EMAIL PROTECTED]] wrote:
I'm thinking XS thoughts because we're going to need a few external
things at SOME point It would be so nice if Perl 6's XS
was part of the language, rather than an external pre-processor.
On Thu, 2002-09-12 at 21:10, Brent Dax wrote:
Aaron Sherman:
# I'm thinking XS thoughts
# Something like:
#
# module somesuch;
# use External (language=C);
# sub chdir(string $path //= $ENV{HOME}) is
# external(returns='int');
I prefer:
module System::FS is
What are the restrictions on is rw? For example, can it be used with
variables of a particular type? If so, does the parameter passed have to
already be that type? What does this do?
sub process(int $i is rw) { $i++ }
my $x = 10;
process($x);
Does C$x become 11? That would require
On Wed, 2002-09-11 at 19:11, [EMAIL PROTECTED] wrote:
Hello everybody,
that's a few month i'm following this mailing list. i dont like all the changes
that are being made to perl
Imagine how I felt when Perl 4 came out, with all that silly binary I/O
stuff! I had no idea what Larry had
Aaron Sherman:
# On Thu, 2002-09-12 at 21:10, Brent Dax wrote:
# Aaron Sherman:
# # I'm thinking XS thoughts
#
# # Something like:
# #
# # module somesuch;
# # use External (language=C);
# # sub chdir(string $path //= $ENV{HOME}) is
# # external(returns='int');
#
# I
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