Re: Faster Command Line Tools in D
On Wednesday, 24 May 2017 at 21:46:10 UTC, cym13 wrote: I am disappointed because there are so many good things to say about this, so many good questions or remarks to make when not familiar with the language, and yet all we get is "Meh, this benchmark shows nothing of D's speed against Python". Wouldn't be the first time https://news.ycombinator.com/item?id=10828450
Re: Faster Command Line Tools in D
On 5/24/2017 3:56 PM, Jon Degenhardt wrote: Its not easy writing an article that doesn't draw some form of criticism. FWIW, the reason I gave a Python example is because it is very commonly used for this type of problem and the language is well suited to it. A second reason is that I've seen several posts where someone has tried to rewrite a Python program like this in D, start with `split`, and wonder how to make it faster. My hope is that this will clarify how to achieve this. Another goal of the article was to describe how performance in the TSV Utilities had been achieved. The article is not about the TSV Utilities, but discussing both the benchmark results and how they had been achieved would be a very long article. Any time one writes an article comparing speed between languages X and Y, someone gets their ox gored and will bitterly complain about how unfair the article is (though I noticed that none of the complainers wrote a faster Python version). Even if you tried to optimize the Python program, you'll be inevitably accused of deliberately not doing it right. The nadir of this for me was when I compared Digital Mars C++ code with DMD. Both share the same optimizer and back end, yet I was accused of "sabotaging" my own C++ compiler in order to make D look better !! Me, I just don't do public comparison benchmarking anymore. It's a waste of time arguing with people about it. I thought you wrote a fine article, and the criticism about the Python code was unwarranted (especially since nobody suggested better code), because the article was about optimizing D code, not optimizing Python.
Bultins .reverse and .sort are likely going to be removed soon.
Hi guys, I just finished the PR to remove the builtin array properties .sort and .reverse. while the dmd changes were trivial fixing all the broken tests were not. Even tests that were supposed to call std.algorithm.sort turned out to use the property by accident; (because of a small error which caused the sort template not to instantiate). If you do have code which still relays on this, please update. Cheers, Stefan
Re: Faster Command Line Tools in D
On Wednesday, 24 May 2017 at 21:46:10 UTC, cym13 wrote: On Wednesday, 24 May 2017 at 21:34:08 UTC, Walter Bright wrote: It's now #4 on the front page of Hacker News: https://news.ycombinator.com/news The comments on HN are useless though, everybody went for the "DÂ versus Python" thing and seem to complain that it's doing a D/Python benchmark while only talking about D optimization...even though optimizing D is the whole point of the article. In the same way they rant against the fact that many iterations on the D script are shown while it is obviously to give different tricks while being clear on what trick gives what. I am disappointed because there are so many good things to say about this, so many good questions or remarks to make when not familiar with the language, and yet all we get is "Meh, this benchmark shows nothing of D's speed against Python". Its not easy writing an article that doesn't draw some form of criticism. FWIW, the reason I gave a Python example is because it is very commonly used for this type of problem and the language is well suited to it. A second reason is that I've seen several posts where someone has tried to rewrite a Python program like this in D, start with `split`, and wonder how to make it faster. My hope is that this will clarify how to achieve this. Another goal of the article was to describe how performance in the TSV Utilities had been achieved. The article is not about the TSV Utilities, but discussing both the benchmark results and how they had been achieved would be a very long article. --Jon
Re: Faster Command Line Tools in D
On Wednesday, 24 May 2017 at 21:34:08 UTC, Walter Bright wrote: It's now #4 on the front page of Hacker News: https://news.ycombinator.com/news The comments on HN are useless though, everybody went for the "DÂ versus Python" thing and seem to complain that it's doing a D/Python benchmark while only talking about D optimization...even though optimizing D is the whole point of the article. In the same way they rant against the fact that many iterations on the D script are shown while it is obviously to give different tricks while being clear on what trick gives what. I am disappointed because there are so many good things to say about this, so many good questions or remarks to make when not familiar with the language, and yet all we get is "Meh, this benchmark shows nothing of D's speed against Python".
Re: Faster Command Line Tools in D
It's now #4 on the front page of Hacker News: https://news.ycombinator.com/news
Re: Faster Command Line Tools in D
On Wednesday, 24 May 2017 at 17:36:29 UTC, cym13 wrote: On Wednesday, 24 May 2017 at 13:39:57 UTC, Mike Parker wrote: [...snip...] A bit off topic but I really like that we still get quality content such as this post on this blog. Sustained quality is hard job and I thank everyone involved for that. The complement to the community is well deserved, thank you for including this post in the company. In this case, the post benefited from some really excellent review feedback and Mike made the publication side really easy. --Jon
Re: Faster Command Line Tools in D
On Wednesday, 24 May 2017 at 13:39:57 UTC, Mike Parker wrote: Some of you may remember Jon Degenhardt's talk from one of the Silicon Valley D meetups, where he described the performance improvements he saw when he rewrote some of eBay's command line tools in D. He has now put the effort into crafting a blog post on the same topic, where he takes D version of a command-line tool written in Python and incrementally improves its performance. The blog: https://dlang.org/blog/2017/05/24/faster-command-line-tools-in-d/ Reddit: https://www.reddit.com/r/programming/comments/6d25mg/faster_command_line_tools_in_d/ A bit off topic but I really like that we still get quality content such as this post on this blog. Sustained quality is hard job and I thank everyone involved for that.
Re: 101 LINQ examples in D
On Wednesday, 24 May 2017 at 16:06:01 UTC, Pradeep Gowda wrote: Inspired by Demis Bellot's "Kotlin LINQ examples" [1], I have started a github repo to port the 101 LINQ examples to D - https://github.com/btbytes/dlang-linq-examples So far, I've completed one section on "Restriction Operators". It has been a fun exercise. More examples to come! [1] https://github.com/mythz/kotlin-linq-examples Have a look at my summary: https://github.com/wilzbach/linq (I never published it, because it's not perfect and I ran out of time because for some functions there isn't an equivalent match in Phobos)
Faster Command Line Tools in D
Some of you may remember Jon Degenhardt's talk from one of the Silicon Valley D meetups, where he described the performance improvements he saw when he rewrote some of eBay's command line tools in D. He has now put the effort into crafting a blog post on the same topic, where he takes D version of a command-line tool written in Python and incrementally improves its performance. The blog: https://dlang.org/blog/2017/05/24/faster-command-line-tools-in-d/ Reddit: https://www.reddit.com/r/programming/comments/6d25mg/faster_command_line_tools_in_d/
Re: Tilix 1.5.8 released
On Wednesday, 24 May 2017 at 07:25:56 UTC, Andrea Fontana wrote: It seems that package on webupd8 is still on 1.5.4 Unfortunately I do not maintain the packages, best course of action would be to drop them a line asking them to update it.
Re: Tilix 1.5.8 released
On Tuesday, 23 May 2017 at 23:35:22 UTC, Gerald wrote: Tilix 1.5.8 is now available with a number of new features and bug fixes. It seems that package on webupd8 is still on 1.5.4 Andrea
Re: Trip notes from Israel
On 2017-05-22 17:05, Andrei Alexandrescu wrote: http://dlang.org/blog/2017/05/22/introspection-introspection-everywhere/ -- Andrei About the custom attributes that are mentioned, like "has acquired a lock" attribute. This would be a perfect candidate for a UDA and using the compiler as a library to implement a domain specific checker for this feature. When the regular compiler sees this attribute it has no meaning to the compiler. But when running the custom checker it will perform some additional checks to verify that the code behaves according to the specific domain requirements. Without knowing any details, it might be possible to implement similar checks today by modifying druntime and replace the RTInfo template with a custom implementation that performs some additional checks. -- /Jacob Carlborg
