MALE SHOEGAZE posted:

so i'm working on generating interrupts for my emulator now. i can implement it synchronously and i'm sure it will work fine, but i'm very tempted to run the cpu in its own thread and send interrupts to it. this seems to better match how the machine would actually work. am i right here or am i just making excuses to play with futures?

gonadic io posted:

poo poo i've just had a great idea. make my own version of try! that automatically annotates the error with standard stack-tracey stuff. failure has a bunch of macros but i didn't see one that did this. too bad that the ? syntax is special and you can't override it with a trait or whatever like you can with + etc

meatpotato posted:

wondering if i can get some feedback on a recent phone interview

for the interview i wrote a moving average class.

it has a circular buffer where (assuming a full buffer) the oldest sample is overwritten as a new sample is written in:

code:

    void add_sample(double sample)
    {
        m_sum -= m_samples[m_write];
        m_sum += sample;
        m_samples[m_write++] = sample;
        m_write %= m_samples.size();
    }
    
    double get_average() const
    {
        return m_sum / m_samples.size();
    }

it seems to work alright

the interviewer also asked how to return the minimum-valued sample in the averaging window in < lg(n) time. I suggested keeping a binary search tree alongside the circular buffer and performing the same deletes/overwrites to it along with the array.

i'm not sure if that's a good answer now since i just read that "classic" binary search trees can't have duplicates. the interviewer also seemed to suggest that only a binary search tree was necessary to solve the problem (not both a buffer and tree), but i can't seem to figure out how that would work.

thoughts on the above? nothing like interviews to make you feel dumb

eschaton posted:

there’s an informative comparison of Veracity with other distributed version control systems on its site

redleader posted:

i've heard people say poo poo like "history should be immutable because if i'm chasing a bug i need to ~understand the thought process~ that the original developer went through. if they rewrite history, i won't be able to read the total history to ~understand~ how the bug was introduced". you haven't ever done or needed to do this, gently caress you

VikingofRock posted:

I'm actually fine with that. In the context of paths, it's pretty clear that / doesn't refer to division, so overloading it adds convenience without hurting readability (personally I'd say it improves readability). Also I think overloading / for paths is pretty common in languages with operator overloading; for example python's pathlib does it too.

BIGFOOT EROTICA posted:

promises

DONT THREAD ON ME posted:

hey ya'll, I havent been posting here in a bit. Here's a relatively positive EN for those interested. Semi programming related.

https://forums.somethingawful.com/showthread.php?threadid=3846735&pagenumber=1213&perpage=40#post489294687

Arcsech posted:

isnt mysql slightly faster if you're basically just using it as a key-value store?

but if you want a key-value store just use redis instead

Blinkz0rz posted:

spring has these really great concepts called interceptors and filters that can be applied before a request hits your controller. they seem like an ideal place to do hmac validation but apparently HttpServletRequest doesn't cache the request body in any way so once you read it it's gone forever and you can't reassign the body back into the request in any way

so now i'm making a hmac validation utility and calling it from the first line of all my controllers rather than doing it the way i want

Sagebrush posted:

i'm working on a project that needs to be able to detect the presence of one specific object in a video stream. imagine like jian-yang's hot dog/not hot dog software, essentially, but maybe even simpler because i'm looking for literally the same object over and over again instead of a general category of hot dogs. however, the object has a fairly complex shape and i need to be able to detect it from any angle.

i feel like this can be done fairly reliably today on desktop hardware with a well-trained neural network, but I don't know anything about what software i should be looking into. anyone got any names?

abigserve posted:

maybe it's unreasonable to write your own messaging system

gonadic io posted:

It's chromium so

Krankenstyle posted:

uggghhhhh

FileAccess (in file.py) needs to know about and import abstract base class Item (in items.py), of which exists multiple subclasses (in a.py, b.py, c.py). The application only knows about the base class, which instantiates the subclasses based on various conditions, so items.py imports a/b/c.py. One of the subclasses wants to use FileAccess.

how the gently caress do i make python not yell at me for circular imports?

Finster Dexter posted:

okay you guys that have k8s, are your clusters fiddly as hell? Like, our clusters (including prod) are unstable and the CEO constantly rips on the CTO because of k8s with stuff like "i think all our problems are because of k8s, etc. etc."

Finster Dexter posted:

WHAT WHAT WHAT??

Is this documented anywhere... this seems like 100% a deal-breaker, imo. Our system is a giant piece of poo poo built by Russian contractors that is tightly coupled with ultimate trust in NATS as a message queue, and if traffic is just lost, that could explain a LOT of issues we've been having.

If this is a documented known issue, then we need to get off it ASAP

Corla Plankun posted:

how do i come up with tasks for a junior Dev to work on? i feel like I'm letting them down by not having work for them but also I'm pretty busy with my own poo poo though?

echinopsis posted:

gonadic io posted:

postgres's json mode?

Sapozhnik posted:

Imagine thinking you need k8s

Shaman Linavi posted:

just finished my time on the bug team and lol i don't even know what the team before us did. we closed 95 bugs (all highest priority of course) and already have 130 in the backlog with a big release coming up next weekend. fixed crappo that was going to get us sued real nice in a few states. glad im not on the rotation again until september*

*im going to be on it forever because turnover

animist posted:

are there any nosql things with anything approaching reasonable transactions

Krankenstyle posted:

is nginx the one where you write the config in some C subset? cause i worked with that one for a while and it fuckin sucks and it would be a good thing if that kind of configuration managementwas forever forbidden everywhere

Share Bear posted:

cool so if youre doing pointers and simple memory addressing to teach a new person poo poo like that, how is it improved over C

how does it make it more approachable?

quote:

better errors?

CMYK BLYAT! posted:

Helm is a trash fire. their literal official guidance in this scenario is "just stick YAML comments in front of all your template lines because then it won't be invalid when it renders", ignoring that this often makes other things invalid and gets really fucky when you have several levels of nested loops and includes