suremarc

5 ms·

1.
by suremarc 2y ago
Arrow is a cross-language standard. Polars is written in Rust but DuckDB is written in C++. So it's not that simple unfortunately.
2.
by suremarc 3y ago
Every type in Go has a zero value. The zero value for pointers is nil. So you can't do it with regular pointers, because users can always create an instance of the zero value.
3.
by suremarc 3y ago
> If the factory is completely inactive, how soon can it produce a single science pack? That time is the latency. That is what I am trying to explain, now for the second time. Let's say you have a magic factory that turns rocks into
4.
by suremarc 3y ago
> This isn't latency in the same sense I was using the word. But it is. If you add more factories for producing advanced chips, you can produce a chemical science pack from start to finish in 24 seconds (assuming producing an advanc
5.
by suremarc 3y ago
Think of it this way, instead. Building a multi-belt system is a pain in the ass that complicates the design of your factory. Conveyor belt highways, multiplexers, tunnels, and a bunch of stuff related to the physical routing of your belts
6.
by suremarc 3y ago
The ability to “share memory faster” is a bigger distinction than you make it out to be. Distributed applications look quite different from merely multithreaded or multiprocess shared-memory applications due to the unreliability of the net
7.
by suremarc 3y ago
I think we all know what someone means when they say “matrix multiplication”. Asserting that * could mean, say, the Hadamard product or the tensor product is a reach. In practice I have never seen it mean anything else for matrices. DSLs ju
8.
by suremarc 3y ago
I understand Fourier transforms fairly well but his video blew my mind. He has a totally original way of distilling mathematical concepts intuitively.
9.
by suremarc 4y ago
I don't think you can have data races (but certainly you can have race conditions) in python because of the GIL. I imagine Ruby is similar. Otherwise, no, the other languages you listed are not "memory safe". Once you start r
10.
by suremarc 4y ago
DOOM 2016 got by on its freshness and its tone. The combat mechanics in DOOM Eternal, while having some divisive elements, really pushed the envelope for the series and for FPS games in general. But that was thanks to Hugo Martin, not Marty
11.
by suremarc 4y ago
I don't know how it works in other languages, but accessing a partially overwritten slice in Go (as will happen in the presence of data races) can cause your code to access out-of-bounds memory. And as we all know, once you have read&#
12.
by suremarc 4y ago
Indeed, this person showed that you can read/write to arbitrary memory addresses inside of a Go program: https://blog.stalkr.net/2022/01/universal-go-exploit-using-d... Although, it's pretty useless as a
13.
by suremarc 4y ago
I have no idea what you mean here. Data races are next to impossible in safe Rust.
14.
by suremarc 4y ago
This is assuming you already have a pointer of the element you're removing, or a neighbor thereof. Otherwise, you'd have to traverse a portion of the linked list, which has a significant amount of per-element overhead.
15.
by suremarc 4y ago
> It's cute for trivial cases like algebra libraries I don't understand this wording. Algebra libraries are nontrivial to implement, as the algorithms that operate on such structures can be exceedingly complex, and there are ma
16.
by suremarc 4y ago
The few times I've dealt with code that does some (even just very basic) algebraic manipulation, I found the lack of operator overloading to be _really_ awkward (look no further the math/big library). For this reason there are man
17.
by suremarc 4y ago
The infinite sum involving powers of two is actually true in the 2-adic integers.
18.
by suremarc 4y ago
I don’t really understand what the borrow checker has to do with the automatic/manual memory management dichotomy.
19.
by suremarc 4y ago
How is memory management with Vec and Box in Rust any different from std::vector and std::unique_ptr in C++?
20.
by suremarc 4y ago
> It has shown that GC vs manual memory management has a third option. C++ had shown this long before Rust.
21.
by suremarc 4y ago
Just return an io.Reader that wraps the DB cursor and outputs CSV data... I fail to see what makes this so difficult. If the "mutable" approach involves passing down a mutable *http.ResponseWriter, then the dual approach of passin
22.
by suremarc 4y ago
You don't return anything in Gin.
23.
by suremarc 4y ago
OP is just holding a reference to a single entry in the vector. You could write whatever you want to that entry, but it's not going to change the length of the vector. In some sense the problem is that Rust is not "fine grained&qu
24.
by suremarc 4y ago
I meant that we did optimizations in Go, on top of using a Kafka client written in C. When language constructs like channels degrade performance, and when goroutine scheduling takes 20% of your cpu time, it begs the question of whether you’
25.
by suremarc 4y ago
Again, scaling out to 30 nodes was not an option for us. It had to run on a single machine, unlike the rest of our data pipeline. While 200MB/s is nowhere near the theoretical limit of our hardware, it is near what Kafka’s stress testi
26.
by suremarc 4y ago
My company offers a data feed over WebSocket that could reach 70MB/s if we allowed you to subscribe to the entire feed at once (we don’t). No one ever planned for it to handle that much data, but here we are. Because WebSocket servers
27.
by suremarc 4y ago
The absence of a proof of correctness is not a proof of incorrectness, strictly speaking.
28.
by suremarc 4y ago
Indeed, try doing any sort of data analysis in Go, it's maddeningly verbose.
29.
by suremarc 4y ago
> Composition: f ⭘ g = g(f(x)) This should be reversed. It is not defined this way in mathematics nor in Haskell.
30.
by suremarc 4y ago
What kind of _small_ computation are you doing that requires 50 whole milliseconds?

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