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Larry Wall Unveils Perl 6.0.0

pigdog.org

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Re: Larry Wall Unveils Perl 6.0.0

#191

Post by jlarocco »

pcmonk wrote: post #72
bgilroy26 wrote: post #41

I love Perl [I have been to perl monger meetings and I had to look up how to 'unshift' in python today]. But Python3 is mostly just Python2 with a print function instead of a print keyword. It is occasionally non-trivial to port large existing code bases from Python2 to Python3, but it is practically always trivial for a Python2 programmer to write new code in Python3. I hope Perl 6 will get its own camel book!

> it is practically always trivial for a Python2 programmer to write new code in Python3. Until you need to use some library that doesn't support python3. I think I've made the transition from python3 to python2 more than I have the other way around.

That argument is becoming a good way to tell who hasn't actually tried Python 3 lately, or is using out of date libraries.

More and more of the bigger libraries are ported already, and a lot of the others have been replaced by newer libraries that work with Python 3. If the library you're trying to use doesn't support Python 3, it's probably a good indication most people have moved on to something better...

Re: Larry Wall Unveils Perl 6.0.0

#192

Post by foota »

baudehlo wrote: post #69
bbanyc wrote: post #58

Earlier quoted context omitted.

I remember buying the camel book ten years ago, and there was a slim Perl 6 volume next to it - http://shop.oreilly.com/product/9780596007379.do I imagine its relevance to the Perl 6 that was announced today is next to nil.

The Perl 6 camel book will probably be published like TAOCP. /s?

If it's ever published :)

Re: Larry Wall Unveils Perl 6.0.0

#195

Post by koenigdavidmj »

1ris wrote: post #187
cygx wrote: post #118

Earlier quoted context omitted.

Linear and geometric sequences are auto-detected, for anything else you'll need to provide a function to compute the next element: 2, 4 ... * # linear 2, 4, 8 ... * # exponential 1, 1 ... * # constant 1, 1, * + * ... * # Fibonacci The last expression is equivalent to the more verbose variant 1, 1, -> $a, $b { $a + $b } ... * that makes use of an 'pointy block' (ie lambda function) instead of the Whatever-*.

This is so very Perl. I guess this is Perls answer to list comprehensions.

I would assume that it has those too. Due to the main implementation being Pugs for a while, the language absorbed a lot of Haskellisms (chiefly laziness).

Re: Larry Wall Unveils Perl 6.0.0

#196

Post by raiph »

joeyh wrote: post #173
cygx wrote: post #118

Earlier quoted context omitted.

Linear and geometric sequences are auto-detected, for anything else you'll need to provide a function to compute the next element: 2, 4 ... * # linear 2, 4, 8 ... * # exponential 1, 1 ... * # constant 1, 1, * + * ... * # Fibonacci The last expression is equivalent to the more verbose variant 1, 1, -> $a, $b { $a + $b } ... * that makes use of an 'pointy block' (ie lambda function) instead of the Whatever-*.

Ah so it's similar to the haskell list comprehension syntax, converted to a point-free form (and with added guessing/defaulting due to the ambiguities therein). [x*2 | x IIRC haskell list comprehensions can't do fib without naming the list so it can refer to itself. OTOH, these perl list comprehensions seems unable to express things that combine values from several lists, eg: [ x*y | x Course, haskell also has a weak…

Fwiw, the Haskell:

  [ x*y | x
could be translated to the Perl 6:

  [2,4...8] X* [-1,0,1]
  # (-2 0 2 -4 0 4 -6 0 6 -8 0 8)

Re: Larry Wall Unveils Perl 6.0.0

#197

Post by jlarocco »

steveklabnik wrote: post #128
ambrice wrote: post #97

So is this a real thing? I've never seen this pigdog website before, it's second newest article was published in 2012, and there's no mention of this on the perl 6 home page or in the perl 6 announcements mailing list..

At FOSDEM earlier this year, Larry gave the presentation they describe, and said that they were expecting a beta release at Christmas this year. So the general concept is legit, regardless of the site.

I don't see how that makes this look any more legitimate. The FOSDEM website says they had over 5000 people attending, so it's not like Larry's talk was a big secret. And Perl 6 has been right around the corner forever, so a fake "Perl 6 is released" page could seem timely and legit in concept at almost any time in the last 10 years.

Even if it's true, if they want anybody to pay attention they should announce it on perl6.org or at least a more professional looking page. If I were at work and opened a page with rotten.com banner ads, and "software jihad" all over the place, I'd close it immediately and hope nobody saw it.

Re: Larry Wall Unveils Perl 6.0.0

#198

Post by kbenson »

mst wrote: post #189
steveklabnik wrote: post #164

Earlier quoted context omitted.

I'm not interested in being condescended to, so

Wut? I just complimented the code you posted, and changed my mind from "the unconstructive guy upthread said trivial, which it isn't, but steve's been kind enough to give me enough information to see it's trivial if I write a port of CMM, and said port is basically identical rather than requiring the crappy alias approach". I've genuinely no idea why you think I was being condescending.

I don't know where steveklabnik hails from, but in the US "cute" is sometimes meant with a condescending overtone. I seem to recall you are from the UK (Scotland?) from the last YAPC I was at, so I suspect this is a dialect difference causing a misunderstanding.

Re: Larry Wall Unveils Perl 6.0.0

#199

Post by raldi »

haberman wrote: post #77

> One of the most impressive things Larry demonstrated was the sequence operator, and Perl 6's ability to intuit sequences. say 1, 2, 4 ... 2**32 > This correctly produced a nice tidy list of just 32 values -- rather than the 4,294,967,296 you might expect. Someone with more time than me needs to find an IQ test that is based around sequence questions like this and plug them all into Perl 6. So we can find out what P…

Douglas Hofstadter proposed something like this long ago, only the task was to find analogies in sequences. For example, what number in the sequence

    1 2 3 4 5 4 5 4 3 2 1
corresponds to the second 3 in this one?

    1 2 3 2 3 2 1
If that seemed too easy, what's the corresponding number in this one?

    5 4 3 2 1 2 1 2 3 4 5
How about this?

    1 2 3 4 5 6 7 6 5 4 5 4 3 2 1

Re: Larry Wall Unveils Perl 6.0.0

#200

Post by kbenson »

jlarocco wrote: post #197
steveklabnik wrote: post #128

Earlier quoted context omitted.

At FOSDEM earlier this year, Larry gave the presentation they describe, and said that they were expecting a beta release at Christmas this year. So the general concept is legit, regardless of the site.

I don't see how that makes this look any more legitimate. The FOSDEM website says they had over 5000 people attending, so it's not like Larry's talk was a big secret. And Perl 6 has been right around the corner forever, so a fake "Perl 6 is released" page could seem timely and legit in concept at almost any time in the last 10 years. Even if it's true, if they want anybody to pay attention they should announce it on…

Not being privy to the talk, my assumption was that the final shipping feature list was solidified, and that's what was being announced. It's still due at Christmas, and that was already known. I think the article's meaning was somewhat ambiguous with the title, and HN just ran with it. Nothing has been released (but apparently there's two beta's officially planned now, the first of which is in a week or so).
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