UmbralRaptor changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer. | We can haz pdf
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<whitequark> egg|cell|egg: can i cast Derived to Base if Derived : Base and it introduces no new fields?
<whitequark> i.e. the cast is no-op from the layout point of view, but the object was originally allocated as Derived
<whitequark> err
<whitequark> cast Base to Derived
<whitequark> (since in the other direction the answer is "yes obviously")
<egg|cell|egg> Hmmm
<egg|cell|egg> I think it might ub to cast like that at 4:30 in the morning but maybe it is defined if the sun is up
<whitequark> :/
<whitequark> bonus points: the pointer to Base comes from C so the C++ compiler doesn't ever observe it being allocated
<egg|cell|egg> Even if ub it might not be exploited ub
<egg|cell|egg> Hmmmm
<SnoopJeDi> UBTC
<whitequark> and Base is defined in a C header
<whitequark> well, a header shared between C++ and C code
<egg|cell|egg> How do vtables work
<whitequark> no vtables
<whitequark> it's a POD
<whitequark> well
<whitequark> it's a standard layout class
<egg|cell|egg> Probably ubbutfine?
<egg|cell|egg> Cat is meowing
<whitequark> ugh fine i'll just copy it
<whitequark> this time i don't capture the pointer
<egg|cell|egg> So I assume the cat disagrees with my analysis
<whitequark> actually i should definitely copy because i might want to add stuff to Derived later
<whitequark> thanks cat
<egg|cell|egg> You were asking about C++ experts earlier, clearly my cat is the only C++ expert
<egg|cell|egg> Note, my answers are from memory because trying to zzz, I am likely wrong in some way
<egg|cell|egg> Will check later
<whitequark> feel free to skip, I already figured that I need to copy anyways
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<_whitenotifier-d13c> [Principia] Thorundir starred Principia - https://git.io/JfMan
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<raptop> !8 Is 5g corona an effective tool to attack and dethrone god with?
<galois> raptop: yes
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<egg|anbo|egg> !wpn whitequark
* galois gives whitequark a fortified field
<whitequark> hi
<raptop> !wpn egg|anbo|egg && whitequark
* galois gives egg|anbo|egg && whitequark a pentagon
<raptop> SnoopJeDi: proposal: sometimes the bot should use the definite article for a weapon
<SnoopJeDi> hmmm
<SnoopJeDi> this *is* a new VPS
<egg|anbo|egg> VPS?
<SnoopJeDi> I could expand it with a real grammar model
<raptop> ooh
<SnoopJeDi> !acr -add:VPS Virtual Private Server
<galois> Definition added!
* raptop stares at some of the numbers their exposure time calculator is generating for hot stars
<raptop> Uh, I think I need to borrow some high speed cameras to deal with how fast this will fill the well
<WeylandsWings> high speed cameras and astronomy normally dont go together
<whitequark> hot stars in your area
<raptop> WeylandsWings: well, not usually. OTOH, transient searchs (hi, Fermi-LAT)...
<raptop> whitequark: The hottest (main sequence) star in the solar neighborhood is Regulus...
<raptop> something something catboys
<WeylandsWings> also if you have a really fast camera arent you then getting mroe noise from the atmo
<raptop> I don't know the details of eg: speckle interferometry, so I can't properly answer that
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<egg|cell|egg> Meow
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<egg|cell|egg> Meow