Comments for Ulf Wiger http://ulf.wiger.net/weblog Just another WordPress weblog Fri, 05 Sep 2008 22:59:05 +0000 http://wordpress.org/?v=2.5.1 Comment on What is Erlang-Style Concurrency? by Ulf Wiger http://ulf.wiger.net/weblog/2008/02/06/what-is-erlang-style-concurrency/#comment-6462 Ulf Wiger Sun, 27 Jul 2008 20:59:55 +0000 http://ulf.wiger.net/weblog/?p=10#comment-6462 @codingthewheel: Thanks for the invite. I view Erlang and C as complementary, and I do agree that every programmer should learn C. I don't necessarily agree that they should do their concurrency programming in it, though. (: @codingthewheel: Thanks for the invite. I view Erlang and C as complementary, and I do agree that every programmer should learn C. I don’t necessarily agree that they should do their concurrency programming in it, though. (:

]]> Comment on What is Erlang-Style Concurrency? by JamesF http://ulf.wiger.net/weblog/2008/02/06/what-is-erlang-style-concurrency/#comment-6365 JamesF Wed, 23 Jul 2008 14:55:31 +0000 http://ulf.wiger.net/weblog/?p=10#comment-6365 "There is another take on dataflow programming, which perhaps would feel more natural in Erlang: Flow-based Programming (http://www.jpaulmorrison.com/cgi-bin/wiki.pl), but this seems different from what you’re talking about." What seemed different between John Morrison's and the Pervasive DataRush team's approach? “There is another take on dataflow programming, which perhaps would feel more natural in Erlang: Flow-based Programming (http://www.jpaulmorrison.com/cgi-bin/wiki.pl), but this seems different from what you’re talking about.”

What seemed different between John Morrison’s and the Pervasive DataRush team’s approach?

]]> Comment on What is Erlang-Style Concurrency? by www.codingthewheel.com http://ulf.wiger.net/weblog/2008/02/06/what-is-erlang-style-concurrency/#comment-6306 www.codingthewheel.com Mon, 21 Jul 2008 04:52:11 +0000 http://ulf.wiger.net/weblog/?p=10#comment-6306 Hi Ulf.. informative post. Care to come to: http://www.codingthewheel.com/archives/learning-to-drive-a-stick-shift And weigh in on the future of Erlang vs. C/C++? Hi Ulf.. informative post. Care to come to:

http://www.codingthewheel.com/archives/learning-to-drive-a-stick-shift

And weigh in on the future of Erlang vs. C/C++?

]]> Comment on Indentation-sensitive Erlang 3 by Ulf Wiger http://ulf.wiger.net/weblog/2008/06/11/indentation-sensitive-erlang-3/#comment-5989 Ulf Wiger Sat, 12 Jul 2008 08:32:35 +0000 http://ulf.wiger.net/weblog/?p=25#comment-5989 @damien: Thanks, but I think l2 is the worst problem, since it's an otherwise perfectly legal (and common!) pattern, which doesn't work when in indentation-sensitive mode. Perhaps the most glaring issues can be fixed with more or less elegant workarounds? Anyone willing to try is welcome to the code. (: @damien: Thanks, but I think l2 is the worst problem, since it’s an otherwise perfectly legal (and common!) pattern, which doesn’t work when in indentation-sensitive mode.

Perhaps the most glaring issues can be fixed with more or less elegant workarounds? Anyone willing to try is welcome to the code. (:

]]> Comment on Indentation-sensitive Erlang 3 by damien morton http://ulf.wiger.net/weblog/2008/06/11/indentation-sensitive-erlang-3/#comment-5283 damien morton Mon, 23 Jun 2008 15:56:51 +0000 http://ulf.wiger.net/weblog/?p=25#comment-5283 Looks pretty damned close to me! Python doesnt attempt to use indentation for forming lists tuples or dictionaries. The commas are still necessary. Of the unhappy cases, h3 seems to me to be the most unhappy one :) Looks pretty damned close to me!

Python doesnt attempt to use indentation for forming lists tuples or dictionaries. The commas are still necessary.

Of the unhappy cases, h3 seems to me to be the most unhappy one :)

]]> Comment on What is Erlang-Style Concurrency? by Ulf Wiger http://ulf.wiger.net/weblog/2008/02/06/what-is-erlang-style-concurrency/#comment-5122 Ulf Wiger Tue, 17 Jun 2008 08:09:21 +0000 http://ulf.wiger.net/weblog/?p=10#comment-5122 @web design company: This is true in a way, except for the fact that erlang processes are much more lightweight than POSIX processes. This has profound implications on how processes are used in system modeling. @web design company: This is true in a way, except for the fact that erlang processes are much more lightweight than POSIX processes. This has profound implications on how processes are used in system modeling.

]]> Comment on What is Erlang-Style Concurrency? by Ulf Wiger http://ulf.wiger.net/weblog/2008/02/06/what-is-erlang-style-concurrency/#comment-5121 Ulf Wiger Tue, 17 Jun 2008 08:04:08 +0000 http://ulf.wiger.net/weblog/?p=10#comment-5121 @Stefan: Erlang uses preemptive scheduling, at least as far as the user is concerned. In the traditional, single-CPU implementation, scheduling was reduction-based and very predictable. In multicore Erlang multiple scheduler threads are premptively scheduled, meaning that scheduling becomes truly preemptive from the user perspective. Message passing does not force a task switch. The receiving process is marked as runnable, but the sending process may well be allowed to continue (unless it is scheduled out for other reasons). @Stefan: Erlang uses preemptive scheduling, at least as far as the user is concerned. In the traditional, single-CPU implementation, scheduling was reduction-based and very predictable. In multicore Erlang multiple scheduler threads are premptively scheduled, meaning that scheduling becomes truly preemptive from the user perspective.

Message passing does not force a task switch. The receiving process is marked as runnable, but the sending process may well be allowed to continue (unless it is scheduled out for other reasons).

]]> Comment on What is Erlang-Style Concurrency? by Ulf Wiger http://ulf.wiger.net/weblog/2008/02/06/what-is-erlang-style-concurrency/#comment-5120 Ulf Wiger Tue, 17 Jun 2008 07:55:40 +0000 http://ulf.wiger.net/weblog/?p=10#comment-5120 @Bob: I'm sorry. I don't have Foxit Reader, and am not sufficiently knowledgeable about the PDF format to determine the source of the problem. It works in Acrobat Reader, as far as I can tell. @Bob: I’m sorry. I don’t have Foxit Reader, and am not sufficiently knowledgeable about the PDF format to determine the source of the problem. It works in Acrobat Reader, as far as I can tell.

]]> Comment on What is Erlang-Style Concurrency? by Bob Foster http://ulf.wiger.net/weblog/2008/02/06/what-is-erlang-style-concurrency/#comment-5061 Bob Foster Sat, 14 Jun 2008 18:07:10 +0000 http://ulf.wiger.net/weblog/?p=10#comment-5061 The PDF version of your presentation crashed Foxit Reader moving from page 3 to 4. The PDF version of your presentation crashed Foxit Reader moving from page 3 to 4.

]]> Comment on What is Erlang-Style Concurrency? by Stephan Schmidt http://ulf.wiger.net/weblog/2008/02/06/what-is-erlang-style-concurrency/#comment-5055 Stephan Schmidt Sat, 14 Jun 2008 14:05:43 +0000 http://ulf.wiger.net/weblog/?p=10#comment-5055 What I can't find anywhere: Is multi tasking in Erlang cooperative and do task switches happend during messages passing? Peace -stephan What I can’t find anywhere: Is multi tasking in Erlang cooperative and do task switches happend during messages passing?

Peace
-stephan

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