chisophugis

6 ms·

1.
by chisophugis 10y ago
> But maybe, they require you to create special versions of object files where even references internal to each library are referenced there as if they live in a different object file? Is that even possible? The extra information that is
2.
by chisophugis 10y ago
> Not sure exactly what you mean by this. If you give up determinism, it can be O(changes) - except for time spent statting the input files which, at least in theory, should be possible to avoid by getting the info from the build system
3.
by chisophugis 10y ago
I agree. It's definitely possible. It's just that the actual benefit is far from reducing link time to "O(changes in the input)" and it would introduce significant complexity into the linker (and keeping LLD simple and e
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by chisophugis 10y ago
> While conventional linkers work at the compilation-unit level (one source file, usually), placing that whole source file's functions adjacently in memory [1], an atom-based linker is able to take the smallest linkable units (indiv
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by chisophugis 10y ago
Every incremental linking technique I'm aware of involves overwriting the output file and does not guarantee that identical input files and command line lead to identical (bit-exact) output files. Incremental linking is not so easy und
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by chisophugis 10y ago
No, it is just that nobody is currently working on it. Last I talked with the Apple folks they are just busy with other stuff. Patches are definitely welcome for MachO improvements in LLD (as always in LLVM!). You should be aware though tha
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by chisophugis 12y ago
What Bjarne doesn't mention is the enormous difference in code size between qsort and std::sort. The flexibility of having the compiler generate a sorting routine from std::sort is convenient but enormously redundant in many cases. In
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by chisophugis 12y ago
I spent about a week going through Mahajan's OCW course "the art of approximation" (it's quite short and reads quite quickly). It changed how I view problem solving and engineering estimation forever. Grab "entire b
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by chisophugis 12y ago
FWIW, a single Boeing 747 engine does about 100MW. Such an engine can be considered to "fit on a truck" for some definition of truck. Also consider that much of the size is due to the fan on the front (which is not part of the act
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by chisophugis 12y ago
Ballpark calculation: 400km/h ~ 100m/s air intake cross section ~ 1m^2 ==> ~ 100m^3/s of air going through radiator density of air ~ 1kg/m^3 ==> ~ 100kg/s of air going through radiator specific heat of air ~ 1
11.
by chisophugis 12y ago
Curiously, pNaCl also takes that same route.
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by chisophugis 12y ago
It's about more than just shutting down though. Biological complexity makes it infeasible to significantly engineer our biological bodies to e.g. make them smaller to reduce fuel costs, or make backups so that we can easily do potentia
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by chisophugis 12y ago
The biggest barrier to space travel is our biology. We must create non-biological humans that can shut off and wait for the entire trip.
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by chisophugis 12y ago
Here's a couple elementary examples that are useful: f[x_Integer]:=x^2 Basically the pattern for the argument of f must match the pattern _Integer, which means that the argument is an integer. If the pattern does not match, then it sta
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by chisophugis 13y ago
Appears to need a bit more robustification. >>> simplify(sqrt(x^2)) Traceback (most recent call last): File "<string>", line 1, in <module> File "/base/data/home/
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by chisophugis 13y ago
mikeselectricstuff did a hack playing around with this concept < http://youtu.be/qy1w6rTpC2g> . Not nearly as sophisticated as the linked post, but still pretty neat (especially seeing how he messes around with it).
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by chisophugis 16y ago
reCAPTCHA is bar none the way to go. Not only is is robust, but it also serves a useful purpose---it uses user answers to the reCAPTCHA to digitize books by having users recognize text from scanned books where OCR would perform poorly. htt
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by chisophugis 16y ago
FWIW, where it says "Already featuring _several hundred_ items, new content will be added regularly.", the underlining gave me an instinctive urge to click on it, expecting some sort of impressive showcase of the items. Also, the graphic at
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by chisophugis 16y ago
It ignores it only as much as the average person does.
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by chisophugis 16y ago
>Why must it be attractive for a female to be powerful in order for her to succeed? There is an undeniable biological tendency to want to attract a partner. Hence, any human's behavior will tend (in varying amounts) toward striving to b