quinnftw's comments

quinnftw | 2 years ago | on: static-server: an HTTP server in Go for static content

Looking at the code this appears [1] to be a very thin wrapper around go's built in file server from the http package.

[1]: https://github.com/eliben/static-server/blob/main/internal/s...

quinnftw | 4 years ago | on: Customize Python dependency resolution with machine learning

It could: What if a machine learning algorithm picked each of your dependency versions for you ~magically~

quinnftw | 8 years ago | on: Retro Review: 2009 Mac Pro in 2018

I run a 2010 MacBook pro which I have upgraded the RAM and swapped out the disk for an SSD (luckily 2010 was pre motherboard soldering nonsense). It still runs like a champ 8 years later.

quinnftw | 8 years ago | on: Attacking Machine Learning with Adversarial Examples

I wonder if one could introduce a secondary classifier which is immune (or more resistant) to this kind of attack as a fail safe. One idea that comes to mind is to back the neural net with a random forest, which I imagine would be very hard to trick with this kind of attack as a collection of independent (key) weak learners are trained on the data. To trick a random forest, you would have to trick the majority of the trees within it.

quinnftw | 8 years ago | on: Write Fast Apps Using Async Python 3.6 and Redis

You can use caching to mimic this behaviour in Flask, I.e.

http://flask.pocoo.org/docs/0.12/patterns/caching/

I'm not sure how this works with multiple threads though, I imagine you would have to synchronize it yourself.

quinnftw | 9 years ago | on: An Introduction to Reflection in C++

Cruising along with frequent pit stops for garbage collection.

All jokes aside I agree with you to some extent: C++ can be frustrating to work with, and there are a lot of quirks that make it really easy to blow your foot off.

These quirks are not without benefit though. Being able to control how memory is allocated is hugely important in performance sensitive applications where pointer chasing is not tolerable. The same can be said about r values/move semantics.

quinnftw | 9 years ago | on: Mapping Strings in C++

I thought this aswell, but you have it backwards. The point is to convert a string to it's corresponding enum, not the other way around.

quinnftw | 9 years ago | on: Data Structures and Algorithms Problems

Genuine curiosity because I don't have a whole lot of experience with embedded systems: Why not just use C then?

Either way I would argue that using sizeof in that way is a sketchy practise.

quinnftw | 9 years ago | on: Data Structures and Algorithms Problems

One nitpick (and this applies to almost every site of this genre, i.e. geeksforgeeks, hackerrank, etc.):

The code listed as "C++" is essentially C with ostreams. If I were interviewing someone and they claimed to know C++, and then used "sizeof(A) / sizeof(A[0])" to get the size of an array, I'd question how much C++ they actually knew. I understand that the focus here is mainly on problem solving and not language specific patterns, but when you advertise the site as a coding interview helper I think that the solution code should reflect that which should be written in an actual interview.

quinnftw | 9 years ago | on: On mutex performance and WTF::Lock

I'd be interested in seeing the rational behind the fairshare policy. I suppose theoretically the firstfit policy could result in starvation via one thread constantly preempting another during the lock contention, but I don't imagine that would happen very often in practise.

quinnftw | 9 years ago | on: What's new in C++17, with lots of examples

This is true, though generally anytime one uses `auto` it should be `const auto&` to avoid swallowing the quantifiers and potentially costly copies anyways.

quinnftw | 9 years ago | on: Mysterious Gmail account lockouts prompt hack fears

Call me naive, but I REALLY think people are overreacting on this. Yes, the timing does seem quite coincidental given the Cloudflare bug, but Google has a pretty good record of being transparent with these things.

On top of this, Google does not use Cloudflare and as far as I know there have been no reports of accounts actually being comprised, only logged out. I would wager whatever maintenance routine they were carrying out accidentally invalided some user sessions.

quinnftw | 9 years ago | on: Common Multithreading Mistakes in C# – Unsafe Assumptions

Potentially, yes. Assuming that you are correctly synchronizing the actions inside each Task as to avoid race conditions (a big assumption), there is no control on the number of threads here. What if your program is already using a bunch of threads for something else, and then you go ahead and spawn off 10 more? You will oversaturate the CPU and end up with virtual threads, thus incurring scheduling overhead. In my opinion when you are doing this type of thing you should almost always use a thread pool to ensure that you aren't creating an unreasonable number of threads.

quinnftw | 9 years ago | on: The most cited deep learning papers

I think what you are describing here is simply "average number of citations per year", no?

quinnftw | 9 years ago | on: Mkfile(8) is severely syscall limited on OS X

Yes but mkfile uses syscalls to create and write to the file. With a smaller buffer more write syscalls are required to populate the file.

quinnftw | 9 years ago | on: Ask HN: What C++ parallelization framework do you use?

I've found that most of my multithreading needs can be serviced by a simple thread pool that I rolled using the constructs that c++ provides (std::queue, std::thread, and std::future mainly). Obviously it's not heavily optimized, but for CPU bound tasks it gets the job done and doesn't require any heavy lifting installing libraries and what not.

quinnftw | 9 years ago | on: 14 Character Random Number Generator in C

This particular one isn't large, but in general a pseudo-prime will produce similar effects.

quinnftw | 9 years ago | on: 14 Character Random Number Generator in C

I noticed that too, I think he may be referring to the fact that generating super large actual prime numbers is hard, so people use probabilistic algorithms to generate probably almost primes

quinnftw | 9 years ago | on: The multiprocessing module in Python

Not quite. You can submit as many jobs as you'd like to the pool and it will delegate them to 16 threads. The pool maintains a queue of work to be done and the fixed number of threads consume from the queue.

quinnftw | 9 years ago | on: How Do I Declare a Function Pointer in C?

You could also do

    void foo(std::function<void(int)> callback);