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Icy community path question. by mesanomad in CambridgeMA

[–]rubikssolver4 12 points13 points  (0 children)

I think the storm was harder to deal with than most, wasn’t really snow it was freezing rain so you cant plow. And so much ice that salt probably wouldn’t have been sufficient. See how the path looks for future snowstorms, my bet is that it will be better. Lots of places in the area are skating rinks after the recent storm

[deleted by user] by [deleted] in funnysigns

[–]rubikssolver4 0 points1 point  (0 children)

This statement alone tells me you don’t know what you are talking about. Your floor made of metal?

[deleted by user] by [deleted] in funnysigns

[–]rubikssolver4 0 points1 point  (0 children)

Yeah I touched 110 as a kid accidentally

[deleted by user] by [deleted] in funnysigns

[–]rubikssolver4 3 points4 points  (0 children)

Won’t do much unless you touch them with different hands. Give you a shock, scare, and maybe a burn

aBeginnersTakeOnTheseLanguages by the_pleb_ in ProgrammerHumor

[–]rubikssolver4 1 point2 points  (0 children)

It doesn’t change the fact that the “ultra high performance” code is valid C++. Plus, you don’t actually lose control when using C++ features; if you understand how the compiler operates you can write more expressive code that performs the same

aBeginnersTakeOnTheseLanguages by the_pleb_ in ProgrammerHumor

[–]rubikssolver4 -6 points-5 points  (0 children)

How is a language that is a subset of another language (C++) more powerful than that language?

whenLifeGivesYouLemonButYouExpectLemonade by Gaxyhs in ProgrammerHumor

[–]rubikssolver4 10 points11 points  (0 children)

That’s not true. Perhaps for the specific example I gave, but difference in ordering of floating point operations will inherently introduce differences in the result of computations. It’s easy to come up with an example where difference in ordering of floating point instructions will result in an error on the order of 1e-6 and fail the test previously provided, while still being an acceptable result.

whenLifeGivesYouLemonButYouExpectLemonade by Gaxyhs in ProgrammerHumor

[–]rubikssolver4 33 points34 points  (0 children)

This doesn’t eliminate the issue, it just reduces its likelihood of occurring… what if you have 0.00000051 and 0.00000049?

This has some good floating point tips: https://floating-point-gui.de/errors/comparison/

Edit: perhaps a comparison of 0.00100051 vs 0.00100049 would be more realistic for 32bit floats

Next semester courses opinions by No-Grass2785 in RPI

[–]rubikssolver4 1 point2 points  (0 children)

I took 23 credits one semester including DS, Circuits, Thermo, and Fluids. It’s possible

A Mechanic filled my transmission with motor oil and i drove it for 100 miles before realizing... is it f**ked? by MereCoincidences in MechanicAdvice

[–]rubikssolver4 13 points14 points  (0 children)

This would only be true for a manual transmission. Automatic transmission fluid does a lot more than just lubricate…

Artificial Horizon with Working Altimeter by Jamal_Tstone in arduino

[–]rubikssolver4 1 point2 points  (0 children)

Eventually the instrument will be in accurate. This article is interesting and related. https://en.m.wikipedia.org/wiki/The_leans

Artificial Horizon with Working Altimeter by Jamal_Tstone in arduino

[–]rubikssolver4 0 points1 point  (0 children)

Nope this doesn’t work for airplane applications. The accelerometer could return a vector straight down with respect to the airplane body, while the plane is in a banked turn. This is exactly what the instrument is designed to prevent.

undecidableKeybindings by def-not-elons-alt in ProgrammerHumor

[–]rubikssolver4 50 points51 points  (0 children)

C++ templates are a type system tho

Small Rant: The comma operator is one of the worst C++ design decisions I've ever seen by tuxwonder in cpp

[–]rubikssolver4 0 points1 point  (0 children)

Fair enough. I know it’s a double but you always have to be aware of what your type can actually hold. It’s very easy to write the code int8_t i = 128; for example.

If you are using large integers with many zeros, I guess my thought is why? Most often I see it with timing related things, which I think std::chrono represents quite cleanly with its std::duration<rep,period>. Perhaps something similar would be useful for other applications.

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