drothlis

12 ms·

61.
by drothlis 5y ago
Ninja's "-d explain" is next to useless in a large build: It says what's dirty but it's hard to relate which dirty input caused which output to be re-built. At the beginning of your build you get pages & pages o
62.
by drothlis 5y ago
Another way is to set $GIT_SSH_COMMAND when cloning: GIT_SSH_COMMAND="ssh -i ~/.ssh/id_ed25519_company_a -o IdentitiesOnly=yes" git clone ... and then set it in your checkout's .git/config for subsequent
63.
by drothlis 5y ago
> The GIL will still be optionally available as an interpreter startup-time option Sounds like they’re going to make it opt-in (or opt-outable) if they do merge it.
64.
by drothlis 6y ago
This contamination of test data from the training data reminds me of "Overly Optimistic Prediction Results on Imbalanced Data: a Case Study of Flaws and Benefits when Applying Over-sampling" [1] where almost 50% of the 24 peer-rev
65.
by drothlis 6y ago
This "not quite 5 minute guide to making an NTP server" is from 2014: https://ava.upuaut.net/?p=726 So GPS boards for Raspberry Pi were cheap off-the-shelf hardware by 2014, at least.
66.
by drothlis 6y ago
I don't know much about Python's C API, but this is the line in the OpenCV Python bindings that drops the GIL: https://github.com/opencv/opencv/blob/4.5.0/modules/python/s... (see ht
67.
by drothlis 6y ago
I believe many (most?) opencv & numpy operations release the GIL. Good point about OpenCV's in-place operations. Sometimes it's tricky/impossible to do that in numpy if you need to implement something that OpenCV doesn&#x
68.
by drothlis 6y ago
For the curious, if you want to avoid numpy's memory overhead[1] here's how you'd do it in C with no dependencies: https://github.com/stb-tester/stb-tester/blob/v32/_stbt/sqdi... This
69.
by drothlis 6y ago
I too was surprised that OP's imgdiff is "3X faster than the fastest in the world pixel-by-pixel image difference tool". I would have expected imagemagick etc to be faster. Here's some Python code (using OpenCV & num
70.
by drothlis 6y ago
> Ninja looks like it tracks dependencies roughly automatically, whereas dependencies are manual in Make Ninja has built-in support for the ".d" files generated by gcc's "-M" family of flags, but you still have t
71.
by drothlis 6y ago
> If commit messages refer to other commits by ID (e.g. "this reverts commit 01234567890abcdef", "In commit 0013deadbeef9a..."), those commit messages should be rewritten to refer to the new commit IDs Finally, a tool
72.
by drothlis 6y ago
It’s sometimes more than one click, but “git blame” (built into the IDE) serves that purpose for me.
73.
by drothlis 6y ago
We too found that the FT232R is unusable in bitbang mode. After much to-and-froing, FTDI support eventually acknowledged that even their later hardware revision "C" is still buggy, despite what the errata sheet implied. We switche
74.
by drothlis 6y ago
Another thought related to characterisation testing, this time from Jeremias Roessler's talk at QAFest Ukraine 2017 ( https://www.youtube.com/watch?v=f4PT_u8hjhU ): Traditional automated tests (with asserts) are "bl
75.
by drothlis 6y ago
This technique is also known as characterisation testing, golden-master testing, snapshot testing, and probably other names too. I recommend looking into https://approvaltests.com/ (already mentioned by another commenter).
76.
by drothlis 6y ago
The OP is 100% right that ninja's biggest architectural insight is the "assembler" metaphor. I came to this same conclusion in https://lwn.net/Articles/706404/ Sad to hear the overall experience has
77.
by drothlis 6y ago
Thanks for the link -- it was really interesting. For other HN readers: The parent works at RedHat (on distro-wide build/packaging? He talks about building Fedora packages) and there are some useful ideas in there. My own notes & t
78.
by drothlis 6y ago
On iOS 13: Settings > Passwords & Accounts > Select each account > Disable the "Mail" slider .
79.
by drothlis 7y ago
Cut means "if you matched this far, don't consider other options even if the current option fails to parse". With this grammar: expr: expr '+' term | term And this input: 5 + It will first consider
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Test.ai’s Appium plugin: How does it work, and how accurate is it?(david.rothlis.net)
2 points by drothlis 8y ago|0 comments
81.
by drothlis 9y ago
It looks like libxo does the output in structured format, but what about input? (For chaining commands together with pipes). Did the FreeBsd porting work[1] implement the input side with libxo, independently of libxo, or not at all? (Not to
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by drothlis 9y ago
Or git lfs, which is even supported by / integrated into github and other git hosting services.
83.
by drothlis 10y ago
You might also like http://david.rothlis.net/c/compilation_model/ -- a tutorial I wrote that goes into some detail on what the preprocessor, compiler, assembler & linker do.
84.
by drothlis 10y ago
11-50 employees according to https://www.crunchbase.com/organization/hybridcluster#/entit...
85.
by drothlis 10y ago
I wonder if most of those include files were the files auto-generated by the C pre-processor to track header file dependencies. In a toy benchmark[1] GNU Make spent 98% of its time processing those include files (for a no-op build). Ninja h
86.
by drothlis 10y ago
I like to highlight just the places where you are defining new variables/functions/types so that the definition is easy to spot. What is the point of highlighting keywords? I suspect that highlighting engines do it simply because
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Add visual verification to your Selenium tests with stb-tester(stb-tester.com)
2 points by drothlis 10y ago|0 comments
88.
by drothlis 10y ago
Yes, the Coursera ML course is equally hand-holdey. (I'd still recommend it anyway.)
89.
by drothlis 10y ago
The article links to a paper[1] that talks about online learning: > The perceptrons are trained by an algorithm that increments a weight when the branch outcome agrees with the weight’s correlation and decrements the weight otherwise. A
90.
by drothlis 10y ago
I second the UVC driver recommendation, or anything with drivers upstream (that is, in the Linux kernel itself). If this is for your day job spending £250 is well worth it for one of the better quality brands, otherwise you'll be spend

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